diff --git a/CLAUDE.md b/CLAUDE.md
index 27f8e06..a664012 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -26,6 +26,7 @@ ServerManager — **кроссплатформенное** Desktop GUI (CustomTk
 | grafana | `grafana_client.py` (requests) | Dashboards, Info, Setup | `--grafana-dashboards`, `--grafana-alerts` |
 | prometheus | `prometheus_client.py` (requests) | Metrics, Info, Setup | `--prom-query`, `--prom-targets`, `--prom-alerts` |
 | winrm | `winrm_client.py` (pywinrm) | PowerShell, Info, Setup | `--ps`, `--cmd` |
+| s3 | `s3_client.py` (boto3) | Objects, Info, Setup | `--s3-buckets`, `--s3-ls`, `--s3-upload`, `--s3-download`, `--s3-delete` |
 | rdp/vnc | `remote_desktop.py` | Launch, Info, Setup | — (запуск внешнего клиента) |
 
 ## БЕЗОПАСНОСТЬ
@@ -77,6 +78,7 @@ core/                          # Бизнес-логика
 ├── grafana_client.py          # Grafana REST API
 ├── prometheus_client.py       # Prometheus REST API
 ├── telnet_client.py           # Telnet (тот же интерфейс что ShellSession)
+├── s3_client.py               # S3/MinIO (boto3)
 ├── winrm_client.py            # PowerShell/CMD через WinRM
 ├── remote_desktop.py          # RDP/VNC (запуск внешнего клиента)
 ├── connection_factory.py      # Фабрика: тип → клиент (lazy imports)
@@ -97,6 +99,7 @@ gui/
 │   ├── query_tab.py           # SQL-редактор + Treeview + Export CSV
 │   ├── redis_tab.py           # Redis-консоль + история
 │   ├── grafana_tab.py         # Дашборды + алерты
+│   ├── s3_tab.py              # S3 браузер объектов
 │   ├── prometheus_tab.py      # PromQL + targets
 │   ├── powershell_tab.py      # PS/CMD (WinRM)
 │   ├── launch_tab.py          # RDP/VNC кнопка Connect
diff --git a/build.py b/build.py
index 45ef504..8bf5f2c 100644
--- a/build.py
+++ b/build.py
@@ -248,17 +248,25 @@ def publish_gitea_release(exe_path: str):
         print(f"Gitea asset upload failed: {e}")
 
 
+def _version_key(path: str):
+    """Extract (major, minor, patch) tuple for semver sorting."""
+    m = re.search(r'v(\d+)\.(\d+)\.(\d+)', os.path.basename(path))
+    if m:
+        return (int(m.group(1)), int(m.group(2)), int(m.group(3)))
+    return (0, 0, 0)
+
+
 def cleanup_old_releases():
     """Keep the first release (v1.0.0) and the last 5 releases, delete the rest."""
     import glob
 
     pattern = os.path.join(RELEASES_DIR, f"{__app_name__}-v*")
-    all_exes = sorted(glob.glob(pattern))
+    all_exes = sorted(glob.glob(pattern), key=_version_key)
 
     if len(all_exes) <= 6:  # first + 5 = 6, nothing to clean
         return
 
-    # First release is always all_exes[0] (sorted, v1.0.0 < v1.8.x)
+    # First release is always all_exes[0] (sorted by semver, v1.0.0 < v1.8.x)
     first = all_exes[0]
     last_5 = all_exes[-5:]
     keep = set([first] + last_5)
diff --git a/core/connection_factory.py b/core/connection_factory.py
index e9362dd..4530ed8 100644
--- a/core/connection_factory.py
+++ b/core/connection_factory.py
@@ -37,6 +37,10 @@ def create_connection(server: dict, key_path: str = ""):
         from core.winrm_client import WinRMClient
         return WinRMClient(server)
 
+    if server_type == "s3":
+        from core.s3_client import S3Client
+        return S3Client(server)
+
     if server_type in ("rdp", "vnc"):
         from core.remote_desktop import RemoteDesktopLauncher
         return RemoteDesktopLauncher()
diff --git a/core/i18n.py b/core/i18n.py
index eaf6614..16c3c4d 100644
--- a/core/i18n.py
+++ b/core/i18n.py
@@ -359,6 +359,38 @@ _EN = {
     "redis_disconnected": "Not connected",
     "redis_error": "Error: {error}",
 
+    # S3 tab
+    "objects": "Objects",
+    "access_key": "Access Key",
+    "secret_key": "Secret Key",
+    "placeholder_secret_key": "Secret key...",
+    "bucket": "Bucket",
+    "s3_objects": "S3 Objects",
+    "s3_bucket": "Bucket:",
+    "s3_back": "Back",
+    "s3_refresh": "Refresh",
+    "s3_upload": "Upload",
+    "s3_download": "Download",
+    "s3_delete": "Delete",
+    "s3_col_name": "Name",
+    "s3_col_size": "Size",
+    "s3_col_modified": "Modified",
+    "s3_connecting": "Connecting...",
+    "s3_connect_failed": "Connection failed",
+    "s3_loading": "Loading...",
+    "s3_items_count": "{count} items",
+    "s3_uploading": "Uploading...",
+    "s3_upload_failed": "Upload failed",
+    "s3_downloading": "Downloading...",
+    "s3_download_ok": "Download complete",
+    "s3_download_failed": "Download failed",
+    "s3_deleting": "Deleting...",
+    "s3_delete_failed": "Delete failed",
+    "s3_drop_hint": "Drag files here to upload",
+    "s3_uploading_n": "Uploading {count} files...",
+    "s3_uploaded_n": "Uploaded {count} files",
+    "s3_upload_partial": "Uploaded {ok}/{total} files",
+
     # Grafana tab
     "grafana_refresh": "Refresh",
     "grafana_dashboards": "Dashboards",
@@ -829,6 +861,38 @@ _RU = {
     "redis_disconnected": "Не подключено",
     "redis_error": "Ошибка: {error}",
 
+    # S3 tab
+    "objects": "Объекты",
+    "access_key": "Access Key",
+    "secret_key": "Secret Key",
+    "placeholder_secret_key": "Секретный ключ...",
+    "bucket": "Бакет",
+    "s3_objects": "Объекты S3",
+    "s3_bucket": "Бакет:",
+    "s3_back": "Назад",
+    "s3_refresh": "Обновить",
+    "s3_upload": "Загрузить",
+    "s3_download": "Скачать",
+    "s3_delete": "Удалить",
+    "s3_col_name": "Имя",
+    "s3_col_size": "Размер",
+    "s3_col_modified": "Изменён",
+    "s3_connecting": "Подключение...",
+    "s3_connect_failed": "Ошибка подключения",
+    "s3_loading": "Загрузка...",
+    "s3_items_count": "{count} объектов",
+    "s3_uploading": "Загрузка файла...",
+    "s3_upload_failed": "Ошибка загрузки",
+    "s3_downloading": "Скачивание...",
+    "s3_download_ok": "Скачивание завершено",
+    "s3_download_failed": "Ошибка скачивания",
+    "s3_deleting": "Удаление...",
+    "s3_delete_failed": "Ошибка удаления",
+    "s3_drop_hint": "Перетащите файлы сюда для загрузки",
+    "s3_uploading_n": "Загрузка {count} файлов...",
+    "s3_uploaded_n": "Загружено {count} файлов",
+    "s3_upload_partial": "Загружено {ok}/{total} файлов",
+
     # Grafana tab
     "grafana_refresh": "Обновить",
     "grafana_dashboards": "Дашборды",
@@ -1299,6 +1363,38 @@ _ZH = {
     "redis_disconnected": "未连接",
     "redis_error": "错误: {error}",
 
+    # S3 tab
+    "objects": "对象",
+    "access_key": "Access Key",
+    "secret_key": "Secret Key",
+    "placeholder_secret_key": "密钥...",
+    "bucket": "存储桶",
+    "s3_objects": "S3 对象",
+    "s3_bucket": "存储桶:",
+    "s3_back": "返回",
+    "s3_refresh": "刷新",
+    "s3_upload": "上传",
+    "s3_download": "下载",
+    "s3_delete": "删除",
+    "s3_col_name": "名称",
+    "s3_col_size": "大小",
+    "s3_col_modified": "修改时间",
+    "s3_connecting": "连接中...",
+    "s3_connect_failed": "连接失败",
+    "s3_loading": "加载中...",
+    "s3_items_count": "{count} 个对象",
+    "s3_uploading": "上传中...",
+    "s3_upload_failed": "上传失败",
+    "s3_downloading": "下载中...",
+    "s3_download_ok": "下载完成",
+    "s3_download_failed": "下载失败",
+    "s3_deleting": "删除中...",
+    "s3_delete_failed": "删除失败",
+    "s3_drop_hint": "拖拽文件到此处上传",
+    "s3_uploading_n": "正在上传 {count} 个文件...",
+    "s3_uploaded_n": "已上传 {count} 个文件",
+    "s3_upload_partial": "已上传 {ok}/{total} 个文件",
+
     # Grafana tab
     "grafana_refresh": "刷新",
     "grafana_dashboards": "仪表盘",
diff --git a/core/icons.py b/core/icons.py
index 3e39b95..fbbdfbf 100644
--- a/core/icons.py
+++ b/core/icons.py
@@ -57,6 +57,7 @@ ICONS = {
     "powershell": "\u2328",  # ⌨
     "launch": "\U0001f5a5",  # 🖥
     "totp": "\U0001f510",    # 🔐
+    "objects": "\U0001faa3", # 🪣
 
     # Context menu
     "connect": "\u25b6",     # ▶
@@ -91,6 +92,7 @@ TYPE_COLORS = {
     "redis": "#dc2626",
     "grafana": "#f97316",
     "prometheus": "#e11d48",
+    "s3": "#16a34a",
 }
 
 # Unicode symbols for each server type (reliable, no PIL needed)
@@ -106,6 +108,7 @@ TYPE_SYMBOLS = {
     "redis": "\u25c6",         # ◆
     "grafana": "\U0001f4ca",   # 📊
     "prometheus": "\U0001f525", # 🔥
+    "s3": "\U0001faa3",         # 🪣
 }
 
 # Short text labels for sidebar badge
@@ -121,6 +124,7 @@ TYPE_LABELS = {
     "redis": "RDS",
     "grafana": "GRF",
     "prometheus": "PRM",
+    "s3": "S3",
 }
 
 
@@ -157,6 +161,7 @@ TAB_ICONS = {
     "metrics": "metrics",
     "powershell": "powershell",
     "launch": "launch",
+    "objects": "objects",
 }
 
 # Context menu icon mapping (i18n_key -> icon_name)
diff --git a/core/s3_client.py b/core/s3_client.py
new file mode 100644
index 0000000..fcff6f8
--- /dev/null
+++ b/core/s3_client.py
@@ -0,0 +1,288 @@
+"""
+S3 client wrapper — duck-typed, lazy-imports boto3 module.
+Works with any S3-compatible storage (AWS, MinIO, etc.).
+
+Resilience features:
+- Adaptive retry with exponential backoff (up to 10 attempts)
+- Multipart upload/download with configurable chunk size
+- Auto-reconnect on connection loss (network switch, Wi-Fi change)
+- boto3 TransferConfig tuned for unstable connections
+"""
+
+import os
+import time
+
+from core.logger import log
+
+_boto3 = None
+_botocore = None
+
+# Retry / resilience constants
+_MAX_RETRIES = 10
+_BASE_DELAY = 2.0     # seconds
+_MAX_DELAY = 60.0     # seconds
+_MULTIPART_THRESHOLD = 8 * 1024 * 1024   # 8 MB — use multipart above this
+_MULTIPART_CHUNKSIZE = 8 * 1024 * 1024   # 8 MB chunks
+_MAX_CONCURRENCY = 4                      # parallel parts (low for unstable links)
+
+
+def _get_boto3():
+    global _boto3, _botocore
+    if _boto3 is None:
+        import boto3 as _b
+        import botocore as _bc
+        _boto3 = _b
+        _botocore = _bc
+    return _boto3
+
+
+def _get_transfer_config():
+    """TransferConfig tuned for unreliable connections."""
+    from boto3.s3.transfer import TransferConfig
+    return TransferConfig(
+        multipart_threshold=_MULTIPART_THRESHOLD,
+        multipart_chunksize=_MULTIPART_CHUNKSIZE,
+        max_concurrency=_MAX_CONCURRENCY,
+        num_download_attempts=_MAX_RETRIES,
+    )
+
+
+def _retry_delay(attempt: int) -> float:
+    """Exponential backoff: 2, 4, 8, 16, 32, 60, 60, ..."""
+    delay = min(_BASE_DELAY * (2 ** attempt), _MAX_DELAY)
+    return delay
+
+
+class S3Client:
+    """Manage a single S3 connection. No ABC — duck typing."""
+
+    def __init__(self, server: dict):
+        self._server = server
+        self._endpoint = server.get("ip", "")
+        # If endpoint doesn't start with http, add https
+        if self._endpoint and not self._endpoint.startswith("http"):
+            use_ssl = server.get("use_ssl", True)
+            scheme = "https" if use_ssl else "http"
+            port = int(server.get("port", 443))
+            if (scheme == "https" and port == 443) or (scheme == "http" and port == 80):
+                self._endpoint = f"{scheme}://{self._endpoint}"
+            else:
+                self._endpoint = f"{scheme}://{self._endpoint}:{port}"
+        self._access_key = server.get("access_key", "")
+        self._secret_key = server.get("secret_key", "")
+        self._bucket = server.get("bucket", "")
+        self._use_ssl = server.get("use_ssl", True)
+        self._client = None
+        self._transfer_config = None
+
+    # -- lifecycle --------------------------------------------------------
+
+    def connect(self) -> bool:
+        try:
+            b3 = _get_boto3()
+            import botocore.config
+            import urllib3
+            urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
+            config = botocore.config.Config(
+                signature_version="s3v4",
+                connect_timeout=15,
+                read_timeout=60,
+                retries={"max_attempts": 5, "mode": "adaptive"},
+                tcp_keepalive=True,
+            )
+            self._client = b3.client(
+                "s3",
+                endpoint_url=self._endpoint,
+                aws_access_key_id=self._access_key,
+                aws_secret_access_key=self._secret_key,
+                config=config,
+                verify=False,
+            )
+            self._transfer_config = _get_transfer_config()
+            # Test connection
+            self._client.list_buckets()
+            log.info("S3 connected %s", self._endpoint)
+            return True
+        except Exception as exc:
+            log.error("S3 connect failed: %s", exc)
+            self._client = None
+            return False
+
+    def _reconnect(self) -> bool:
+        """Try to re-establish the S3 connection after a drop."""
+        log.warning("S3 reconnecting to %s...", self._endpoint)
+        self._client = None
+        return self.connect()
+
+    def _ensure_connected(self) -> bool:
+        """Check connection, reconnect if needed."""
+        if self._client is None:
+            return self._reconnect()
+        try:
+            self._client.list_buckets()
+            return True
+        except Exception:
+            return self._reconnect()
+
+    def disconnect(self):
+        self._client = None
+        log.info("S3 disconnected")
+
+    def check_connection(self) -> bool:
+        try:
+            if self._client is None:
+                return False
+            self._client.list_buckets()
+            return True
+        except Exception:
+            return False
+
+    # -- bucket operations ------------------------------------------------
+
+    def list_buckets(self) -> list[dict]:
+        """Return list of {'Name': str, 'CreationDate': datetime}."""
+        if not self._ensure_connected():
+            return []
+        try:
+            resp = self._client.list_buckets()
+            return resp.get("Buckets", [])
+        except Exception as exc:
+            log.error("S3 list_buckets failed: %s", exc)
+            return []
+
+    # -- object operations ------------------------------------------------
+
+    def list_objects(self, bucket: str = "", prefix: str = "",
+                     delimiter: str = "/") -> tuple[list[dict], list[str]]:
+        """List objects and common prefixes in a bucket/prefix.
+
+        Returns (objects, prefixes) where:
+        - objects: list of {'Key', 'Size', 'LastModified'}
+        - prefixes: list of prefix strings (subdirectories)
+        """
+        if not self._ensure_connected():
+            return [], []
+        bucket = bucket or self._bucket
+        if not bucket:
+            return [], []
+        try:
+            objects = []
+            prefixes = []
+            paginator = self._client.get_paginator("list_objects_v2")
+            kwargs = {"Bucket": bucket, "Delimiter": delimiter}
+            if prefix:
+                kwargs["Prefix"] = prefix
+            for page in paginator.paginate(**kwargs):
+                for obj in page.get("Contents", []):
+                    # Skip the prefix itself
+                    if obj["Key"] != prefix:
+                        objects.append(obj)
+                for cp in page.get("CommonPrefixes", []):
+                    prefixes.append(cp["Prefix"])
+            return objects, prefixes
+        except Exception as exc:
+            log.error("S3 list_objects failed: %s", exc)
+            return [], []
+
+    def upload_file(self, local_path: str, bucket: str, key: str,
+                    progress_cb=None, status_cb=None) -> bool:
+        """Upload a local file to S3 with retry and resume.
+
+        progress_cb(bytes_transferred) — called periodically for progress bar.
+        status_cb(message) — called with status messages (retry info, etc.).
+
+        Uses multipart upload for files > 8 MB.
+        On failure, retries up to 10 times with exponential backoff.
+        boto3 multipart automatically resumes failed parts.
+        """
+        if not self._ensure_connected():
+            return False
+        file_size = os.path.getsize(local_path)
+        for attempt in range(_MAX_RETRIES):
+            try:
+                self._client.upload_file(
+                    local_path, bucket, key,
+                    Config=self._transfer_config,
+                    Callback=progress_cb,
+                )
+                log.info("S3 uploaded %s -> s3://%s/%s (%d bytes)",
+                         local_path, bucket, key, file_size)
+                return True
+            except Exception as exc:
+                delay = _retry_delay(attempt)
+                log.warning("S3 upload attempt %d/%d failed: %s (retry in %.0fs)",
+                            attempt + 1, _MAX_RETRIES, exc, delay)
+                if status_cb:
+                    status_cb(f"Retry {attempt + 1}/{_MAX_RETRIES} in {delay:.0f}s...")
+                # Reset progress for retry (callback accumulates)
+                if progress_cb and attempt < _MAX_RETRIES - 1:
+                    # We can't easily reset boto3's internal counter,
+                    # but the GUI tracks total bytes itself
+                    pass
+                time.sleep(delay)
+                # Reconnect before retry
+                if not self._reconnect():
+                    log.error("S3 reconnect failed on attempt %d", attempt + 1)
+                    continue
+
+        log.error("S3 upload failed after %d attempts: %s -> s3://%s/%s",
+                  _MAX_RETRIES, local_path, bucket, key)
+        return False
+
+    def download_file(self, bucket: str, key: str, local_path: str,
+                      progress_cb=None, status_cb=None) -> bool:
+        """Download an S3 object to a local file with retry.
+
+        progress_cb(bytes_transferred) — called periodically.
+        status_cb(message) — called with retry info.
+
+        boto3 TransferConfig.num_download_attempts handles part-level retries.
+        This method adds full-transfer retries with reconnect.
+        """
+        if not self._ensure_connected():
+            return False
+        for attempt in range(_MAX_RETRIES):
+            try:
+                self._client.download_file(
+                    bucket, key, local_path,
+                    Config=self._transfer_config,
+                    Callback=progress_cb,
+                )
+                log.info("S3 downloaded s3://%s/%s -> %s", bucket, key, local_path)
+                return True
+            except Exception as exc:
+                delay = _retry_delay(attempt)
+                log.warning("S3 download attempt %d/%d failed: %s (retry in %.0fs)",
+                            attempt + 1, _MAX_RETRIES, exc, delay)
+                if status_cb:
+                    status_cb(f"Retry {attempt + 1}/{_MAX_RETRIES} in {delay:.0f}s...")
+                time.sleep(delay)
+                if not self._reconnect():
+                    log.error("S3 reconnect failed on attempt %d", attempt + 1)
+                    continue
+
+        log.error("S3 download failed after %d attempts: s3://%s/%s -> %s",
+                  _MAX_RETRIES, bucket, key, local_path)
+        return False
+
+    def delete_object(self, bucket: str, key: str) -> bool:
+        """Delete an object from S3."""
+        if not self._ensure_connected():
+            return False
+        try:
+            self._client.delete_object(Bucket=bucket, Key=key)
+            log.info("S3 deleted s3://%s/%s", bucket, key)
+            return True
+        except Exception as exc:
+            log.error("S3 delete failed: %s", exc)
+            return False
+
+    def get_object_size(self, bucket: str, key: str) -> int:
+        """Get size of an object in bytes."""
+        if not self._ensure_connected():
+            return 0
+        try:
+            resp = self._client.head_object(Bucket=bucket, Key=key)
+            return resp.get("ContentLength", 0)
+        except Exception:
+            return 0
diff --git a/core/server_store.py b/core/server_store.py
index 8c99371..b7004d3 100644
--- a/core/server_store.py
+++ b/core/server_store.py
@@ -26,7 +26,7 @@ BACKUP_DIR = os.path.join(SHARED_DIR, "backups")
 LOCAL_CONFIG_DIR = os.path.join(os.path.dirname(os.path.dirname(os.path.abspath(__file__))), "config")
 EXAMPLE_FILE = os.path.join(LOCAL_CONFIG_DIR, "servers.example.json")
 
-SERVER_TYPES = ["ssh", "telnet", "rdp", "vnc", "winrm", "mariadb", "mssql", "postgresql", "redis", "grafana", "prometheus"]
+SERVER_TYPES = ["ssh", "telnet", "rdp", "vnc", "winrm", "mariadb", "mssql", "postgresql", "redis", "grafana", "prometheus", "s3"]
 
 DEFAULT_PORTS = {
     "ssh": 22,
@@ -40,6 +40,7 @@ DEFAULT_PORTS = {
     "redis": 6379,
     "grafana": 3000,
     "prometheus": 9090,
+    "s3": 443,
 }
 
 # Auto-backup interval: 10 minutes
diff --git a/core/status_checker.py b/core/status_checker.py
index 160762d..903c3b3 100644
--- a/core/status_checker.py
+++ b/core/status_checker.py
@@ -19,6 +19,7 @@ _SSH_TYPE = {"ssh"}
 _SQL_TYPES = {"mariadb", "mssql", "postgresql"}
 _REDIS_TYPE = {"redis"}
 _HTTP_TYPES = {"grafana", "prometheus", "winrm"}
+_S3_TYPE = {"s3"}
 _TCP_TYPES = {"telnet", "rdp", "vnc"}
 
 
@@ -60,6 +61,8 @@ class StatusChecker:
             return self._check_http(server, "/-/healthy")
         if server_type == "winrm":
             return self._check_http(server, "/wsman")
+        if server_type in _S3_TYPE:
+            return self._check_s3(server)
         if server_type in _TCP_TYPES:
             return self._check_tcp(server)
 
@@ -106,6 +109,17 @@ class StatusChecker:
         except Exception:
             return False
 
+    def _check_s3(self, server: dict) -> bool:
+        """Check S3 via list_buckets."""
+        try:
+            from core.s3_client import S3Client
+            client = S3Client(server)
+            result = client.connect()
+            client.disconnect()
+            return result
+        except Exception:
+            return False
+
     def _check_http(self, server: dict, path: str) -> bool:
         """Check HTTP(S) endpoint."""
         try:
diff --git a/gui/app.py b/gui/app.py
index f08946a..6d0e76b 100644
--- a/gui/app.py
+++ b/gui/app.py
@@ -28,6 +28,7 @@ from gui.tabs.grafana_tab import GrafanaTab
 from gui.tabs.prometheus_tab import PrometheusTab
 from gui.tabs.powershell_tab import PowershellTab
 from gui.tabs.launch_tab import LaunchTab
+from gui.tabs.s3_tab import S3Tab
 
 # Tab sets per server type — determines which tabs are shown
 TAB_REGISTRY = {
@@ -42,6 +43,7 @@ TAB_REGISTRY = {
     "prometheus":  ["metrics", "info", "setup"],
     "rdp":         ["launch", "info", "setup"],
     "vnc":         ["launch", "info", "setup"],
+    "s3":          ["objects", "info", "setup"],
 }
 
 # Map tab key → widget class (used as lazy factory)
@@ -58,6 +60,7 @@ TAB_CLASSES = {
     "metrics":    PrometheusTab,
     "powershell": PowershellTab,
     "launch":     LaunchTab,
+    "objects":    S3Tab,
 }
 
 
diff --git a/gui/server_dialog.py b/gui/server_dialog.py
index 3bab689..e704bcd 100644
--- a/gui/server_dialog.py
+++ b/gui/server_dialog.py
@@ -24,6 +24,7 @@ FIELD_MAP = {
     "prometheus": ["use_ssl"],
     "rdp":        ["user", "password", "rdp_resolution", "rdp_quality", "rdp_clipboard", "rdp_drives", "rdp_printers"],
     "vnc":        ["password"],
+    "s3":         ["access_key", "secret_key", "bucket", "use_ssl"],
 }
 
 
@@ -242,6 +243,27 @@ class ServerDialog(ctk.CTkToplevel):
         ctk.CTkCheckBox(f, text=t("rdp_printers"), variable=self._rdp_printers_var).pack(fill="x", padx=20, pady=(4, 2))
         self._field_frames["rdp_printers"] = f
 
+        # --- access_key ---
+        f = ctk.CTkFrame(self, fg_color="transparent")
+        ctk.CTkLabel(f, text=t("access_key"), anchor="w").pack(fill="x", **pad)
+        self.access_key_entry = ctk.CTkEntry(f, placeholder_text="AKIAIOSFODNN7EXAMPLE")
+        self.access_key_entry.pack(fill="x", **entry_pad)
+        self._field_frames["access_key"] = f
+
+        # --- secret_key ---
+        f = ctk.CTkFrame(self, fg_color="transparent")
+        ctk.CTkLabel(f, text=t("secret_key"), anchor="w").pack(fill="x", **pad)
+        self.secret_key_entry = ctk.CTkEntry(f, show="*", placeholder_text=t("placeholder_secret_key"))
+        self.secret_key_entry.pack(fill="x", **entry_pad)
+        self._field_frames["secret_key"] = f
+
+        # --- bucket ---
+        f = ctk.CTkFrame(self, fg_color="transparent")
+        ctk.CTkLabel(f, text=t("bucket"), anchor="w").pack(fill="x", **pad)
+        self.bucket_entry = ctk.CTkEntry(f, placeholder_text="my-bucket")
+        self.bucket_entry.pack(fill="x", **entry_pad)
+        self._field_frames["bucket"] = f
+
         # --- use_ssl ---
         f = ctk.CTkFrame(self, fg_color="transparent")
         self.use_ssl_var = ctk.BooleanVar(value=False)
@@ -282,6 +304,9 @@ class ServerDialog(ctk.CTkToplevel):
             self.db_index_entry.insert(0, str(server.get("db_index", "")))
             self.api_token_entry.insert(0, server.get("api_token", ""))
             self.use_ssl_var.set(server.get("use_ssl", False))
+            self.access_key_entry.insert(0, server.get("access_key", ""))
+            self.secret_key_entry.insert(0, server.get("secret_key", ""))
+            self.bucket_entry.insert(0, server.get("bucket", ""))
 
             # RDP settings
             res_raw = server.get("rdp_resolution", "auto")
@@ -411,6 +436,21 @@ class ServerDialog(ctk.CTkToplevel):
             if token:
                 server_data["api_token"] = token
 
+        if "access_key" in visible:
+            ak = self.access_key_entry.get().strip()
+            if ak:
+                server_data["access_key"] = ak
+
+        if "secret_key" in visible:
+            sk = self.secret_key_entry.get()
+            if sk:
+                server_data["secret_key"] = sk
+
+        if "bucket" in visible:
+            bkt = self.bucket_entry.get().strip()
+            if bkt:
+                server_data["bucket"] = bkt
+
         if "use_ssl" in visible:
             if self.use_ssl_var.get():
                 server_data["use_ssl"] = True
diff --git a/gui/tabs/s3_tab.py b/gui/tabs/s3_tab.py
new file mode 100644
index 0000000..44ef9c0
--- /dev/null
+++ b/gui/tabs/s3_tab.py
@@ -0,0 +1,543 @@
+"""
+S3 tab — bucket/object browser with upload, download, delete actions.
+Supports drag-and-drop from OS file manager for upload.
+"""
+
+import os
+import sys
+import tempfile
+import threading
+from tkinter import ttk, filedialog
+
+import customtkinter as ctk
+from core.s3_client import S3Client
+from core.i18n import t
+from core.icons import icon_text
+from gui.tabs.query_tab import apply_dark_scrollbar_style
+
+
+def _human_size(size_bytes: int) -> str:
+    """Format bytes to human-readable string."""
+    if size_bytes < 1024:
+        return f"{size_bytes} B"
+    for unit in ("KB", "MB", "GB", "TB"):
+        size_bytes /= 1024
+        if size_bytes < 1024:
+            return f"{size_bytes:.1f} {unit}"
+    return f"{size_bytes:.1f} PB"
+
+
+def _setup_drop(widget, callback):
+    """Setup OS drag-and-drop onto a widget. Cross-platform with graceful fallback."""
+    if sys.platform == "win32":
+        try:
+            import windnd
+            windnd.hook_dropfiles(widget, func=callback)
+            return True
+        except Exception:
+            pass
+    # tkinterdnd2 fallback (works on Linux/macOS if installed)
+    try:
+        widget.drop_target_register("DND_Files")
+        widget.dnd_bind("<<Drop>>", lambda e: callback(_parse_dnd_paths(e.data)))
+        return True
+    except Exception:
+        pass
+    return False
+
+
+def _parse_dnd_paths(data: str) -> list[str]:
+    """Parse tkinterdnd2 drop data into list of file paths."""
+    paths = []
+    # tkinterdnd2 wraps paths with spaces in braces: {C:/path with spaces/file.txt}
+    i = 0
+    while i < len(data):
+        if data[i] == '{':
+            end = data.index('}', i)
+            paths.append(data[i + 1:end])
+            i = end + 2  # skip } and space
+        elif data[i] == ' ':
+            i += 1
+        else:
+            end = data.find(' ', i)
+            if end == -1:
+                end = len(data)
+            paths.append(data[i:end])
+            i = end + 1
+    return paths
+
+
+class S3Tab(ctk.CTkFrame):
+    def __init__(self, master, store):
+        super().__init__(master, fg_color="transparent")
+        self.store = store
+        self._current_alias: str | None = None
+        self._client: S3Client | None = None
+        self._current_bucket: str = ""
+        self._current_prefix: str = ""
+        self._nav_stack: list[str] = []
+        self._dnd_active = False
+
+        self._build_ui()
+
+    def _build_ui(self):
+        apply_dark_scrollbar_style()
+
+        # ── Header ──
+        header = ctk.CTkFrame(self, fg_color="transparent")
+        header.pack(fill="x", padx=15, pady=(15, 5))
+
+        self._title_label = ctk.CTkLabel(
+            header, text=t("s3_objects"),
+            font=ctk.CTkFont(size=18, weight="bold"),
+        )
+        self._title_label.pack(side="left")
+
+        self._status_label = ctk.CTkLabel(
+            header, text="", font=ctk.CTkFont(size=12),
+            text_color="#9ca3af",
+        )
+        self._status_label.pack(side="left", padx=(15, 0))
+
+        # Buttons
+        btn_frame = ctk.CTkFrame(header, fg_color="transparent")
+        btn_frame.pack(side="right")
+
+        self._back_btn = ctk.CTkButton(
+            btn_frame, text=icon_text("back", t("s3_back")), width=80,
+            command=self._go_back, state="disabled",
+        )
+        self._back_btn.pack(side="left", padx=(0, 5))
+
+        self._refresh_btn = ctk.CTkButton(
+            btn_frame, text=icon_text("refresh", t("s3_refresh")), width=100,
+            command=self._refresh,
+        )
+        self._refresh_btn.pack(side="left", padx=(0, 5))
+
+        self._upload_btn = ctk.CTkButton(
+            btn_frame, text=icon_text("upload", t("s3_upload")), width=100,
+            command=self._upload,
+        )
+        self._upload_btn.pack(side="left", padx=(0, 5))
+
+        self._download_btn = ctk.CTkButton(
+            btn_frame, text=icon_text("download", t("s3_download")), width=110,
+            command=self._download,
+        )
+        self._download_btn.pack(side="left", padx=(0, 5))
+
+        self._delete_btn = ctk.CTkButton(
+            btn_frame, text=icon_text("delete", t("s3_delete")), width=100,
+            fg_color="#dc2626", hover_color="#b91c1c",
+            command=self._delete,
+        )
+        self._delete_btn.pack(side="left")
+
+        # ── Bucket selector row ──
+        bucket_frame = ctk.CTkFrame(self, fg_color="transparent")
+        bucket_frame.pack(fill="x", padx=15, pady=(5, 5))
+
+        ctk.CTkLabel(bucket_frame, text=t("s3_bucket"),
+                      font=ctk.CTkFont(size=12, weight="bold")).pack(side="left", padx=(0, 5))
+
+        self._bucket_var = ctk.StringVar(value="")
+        self._bucket_menu = ctk.CTkOptionMenu(
+            bucket_frame, variable=self._bucket_var, values=[""],
+            width=200, command=self._on_bucket_change,
+        )
+        self._bucket_menu.pack(side="left", padx=(0, 15))
+
+        # Path display
+        self._path_label = ctk.CTkLabel(
+            bucket_frame, text="/", font=ctk.CTkFont(family="Consolas", size=12),
+            text_color="#60a5fa",
+        )
+        self._path_label.pack(side="left", fill="x", expand=True)
+
+        # ── Progress bar (hidden by default) ──
+        self._progress_frame = ctk.CTkFrame(self, fg_color="transparent")
+        # Don't pack yet — shown only during transfer
+
+        self._progress_label = ctk.CTkLabel(
+            self._progress_frame, text="", font=ctk.CTkFont(size=11),
+            text_color="#9ca3af",
+        )
+        self._progress_label.pack(side="left", padx=(0, 10))
+
+        self._progress_bar = ctk.CTkProgressBar(self._progress_frame, width=300, height=14)
+        self._progress_bar.set(0)
+        self._progress_bar.pack(side="left", fill="x", expand=True)
+
+        self._progress_pct = ctk.CTkLabel(
+            self._progress_frame, text="0%", font=ctk.CTkFont(size=11, weight="bold"),
+            text_color="#60a5fa", width=45,
+        )
+        self._progress_pct.pack(side="left", padx=(10, 0))
+
+        self._transfer_bytes = 0
+        self._transfer_total = 0
+
+        # ── Treeview for objects ──
+        self._tree_frame = ctk.CTkFrame(self, fg_color="#1e1e1e", corner_radius=8)
+        self._tree_frame.pack(fill="both", expand=True, padx=15, pady=(5, 15))
+
+        columns = ("name", "size", "modified")
+        self._tree = ttk.Treeview(
+            self._tree_frame, columns=columns, show="headings",
+            selectmode="browse", style="Dark.Treeview",
+        )
+        self._tree.heading("name", text=t("s3_col_name"))
+        self._tree.heading("size", text=t("s3_col_size"))
+        self._tree.heading("modified", text=t("s3_col_modified"))
+        self._tree.column("name", width=400, minwidth=200)
+        self._tree.column("size", width=100, minwidth=80, anchor="e")
+        self._tree.column("modified", width=180, minwidth=120)
+
+        scrollbar = ttk.Scrollbar(self._tree_frame, orient="vertical",
+                                   command=self._tree.yview,
+                                   style="Dark.Vertical.TScrollbar")
+        self._tree.configure(yscrollcommand=scrollbar.set)
+
+        self._tree.pack(side="left", fill="both", expand=True)
+        scrollbar.pack(side="right", fill="y")
+
+        # Double-click to enter prefix (folder) or download file
+        self._tree.bind("<Double-1>", self._on_double_click)
+
+        # Dark treeview style
+        style = ttk.Style()
+        style.configure("Dark.Treeview",
+                         background="#2b2b2b", foreground="#e5e5e5",
+                         fieldbackground="#2b2b2b", borderwidth=0, rowheight=26)
+        style.configure("Dark.Treeview.Heading",
+                         background="#333333", foreground="#e5e5e5",
+                         borderwidth=0, relief="flat")
+        style.map("Dark.Treeview",
+                   background=[("selected", "#1e3a5f")],
+                   foreground=[("selected", "#ffffff")])
+
+        # ── Drop zone overlay (shown when no files / as hint) ──
+        self._drop_hint = ctk.CTkLabel(
+            self._tree_frame,
+            text=t("s3_drop_hint"),
+            font=ctk.CTkFont(size=14),
+            text_color="#6b7280",
+        )
+
+        # Setup OS drag-and-drop on the treeview area
+        self.after(200, self._init_dnd)
+
+    def _init_dnd(self):
+        """Initialize drag-and-drop after widget is mapped."""
+        try:
+            self._dnd_active = _setup_drop(self._tree, self._on_files_dropped)
+            if not self._dnd_active:
+                # Try on the frame too
+                self._dnd_active = _setup_drop(self._tree_frame, self._on_files_dropped)
+        except Exception:
+            self._dnd_active = False
+
+    def _on_files_dropped(self, files):
+        """Handle files dropped from OS file manager."""
+        if not self._client or not self._current_bucket:
+            return
+        # windnd gives list of bytes on Windows
+        paths = []
+        for f in files:
+            if isinstance(f, bytes):
+                paths.append(f.decode("utf-8", errors="replace"))
+            else:
+                paths.append(str(f))
+        paths = [p for p in paths if os.path.isfile(p)]
+        if not paths:
+            return
+        self._upload_files(paths)
+
+    def _show_progress(self, label: str, total_bytes: int):
+        """Show and reset the progress bar."""
+        self._transfer_bytes = 0
+        self._transfer_total = max(total_bytes, 1)
+        self._progress_bar.set(0)
+        self._progress_pct.configure(text="0%")
+        self._progress_label.configure(text=label)
+        self._progress_frame.pack(fill="x", padx=15, pady=(2, 2),
+                                   before=self._tree_frame)
+
+    def _hide_progress(self):
+        """Hide the progress bar."""
+        self._progress_frame.pack_forget()
+
+    def _on_progress(self, chunk_bytes: int):
+        """Called from transfer thread — schedule GUI update."""
+        self._transfer_bytes += chunk_bytes
+        self.after(0, self._update_progress)
+
+    def _update_progress(self):
+        """Update progress bar on GUI thread."""
+        if self._transfer_total <= 0:
+            return
+        ratio = min(self._transfer_bytes / self._transfer_total, 1.0)
+        self._progress_bar.set(ratio)
+        pct = int(ratio * 100)
+        self._progress_pct.configure(text=f"{pct}%")
+        size_str = f"{_human_size(self._transfer_bytes)} / {_human_size(self._transfer_total)}"
+        label = self._progress_label.cget("text").split(" — ")[0]
+        self._progress_label.configure(text=f"{label} — {size_str}")
+
+    def _on_transfer_status(self, message: str):
+        """Called from transfer thread with retry/status info."""
+        # Reset progress on retry (boto3 restarts the transfer)
+        self._transfer_bytes = 0
+        self.after(0, lambda: self._status_label.configure(text=message))
+
+    def _upload_files(self, paths: list[str]):
+        """Upload multiple files to current prefix."""
+        if not self._client or not self._current_bucket:
+            return
+        total_files = len(paths)
+        total_bytes = sum(os.path.getsize(p) for p in paths if os.path.isfile(p))
+        label = (t("s3_uploading_n").format(count=total_files) if total_files > 1
+                 else t("s3_uploading"))
+        self._status_label.configure(text=label)
+        self._show_progress(label, total_bytes)
+
+        def _do():
+            ok_count = 0
+            for path in paths:
+                filename = os.path.basename(path)
+                key = self._current_prefix + filename
+                if self._client.upload_file(
+                        path, self._current_bucket, key,
+                        progress_cb=self._on_progress,
+                        status_cb=self._on_transfer_status):
+                    ok_count += 1
+            self.after(0, lambda: self._on_upload_done(ok_count, total_files))
+
+        threading.Thread(target=_do, daemon=True).start()
+
+    def _on_upload_done(self, ok_count: int, total: int):
+        self._hide_progress()
+        if ok_count == total:
+            self._status_label.configure(
+                text=t("s3_uploaded_n").format(count=ok_count))
+        else:
+            self._status_label.configure(
+                text=t("s3_upload_partial").format(ok=ok_count, total=total))
+        self._refresh()
+
+    # -- server switch ----------------------------------------------------
+
+    def set_server(self, alias: str | None):
+        """Called when user selects a server in sidebar."""
+        if alias == self._current_alias:
+            return
+        self._current_alias = alias
+        if not alias:
+            self._client = None
+            self._tree.delete(*self._tree.get_children())
+            self._status_label.configure(text="")
+            return
+        self._client = None
+        self._current_prefix = ""
+        self._nav_stack.clear()
+        self._tree.delete(*self._tree.get_children())
+        self._status_label.configure(text=t("s3_connecting"))
+
+        server = self.store.get_server(alias)
+        if not server:
+            return
+
+        self._current_bucket = server.get("bucket", "")
+
+        def _connect():
+            client = S3Client(server)
+            ok = client.connect()
+            if ok:
+                self._client = client
+                self.after(0, self._load_buckets)
+            else:
+                self.after(0, lambda: self._status_label.configure(
+                    text=t("s3_connect_failed")))
+
+        threading.Thread(target=_connect, daemon=True).start()
+
+    def _load_buckets(self):
+        if not self._client:
+            return
+
+        def _fetch():
+            buckets = self._client.list_buckets()
+            names = [b["Name"] for b in buckets]
+            self.after(0, lambda: self._update_buckets(names))
+
+        threading.Thread(target=_fetch, daemon=True).start()
+
+    def _update_buckets(self, names: list[str]):
+        if not names:
+            names = [""]
+        self._bucket_menu.configure(values=names)
+        if self._current_bucket and self._current_bucket in names:
+            self._bucket_var.set(self._current_bucket)
+        elif names:
+            self._bucket_var.set(names[0])
+            self._current_bucket = names[0]
+        self._refresh()
+
+    def _on_bucket_change(self, value: str):
+        self._current_bucket = value
+        self._current_prefix = ""
+        self._nav_stack.clear()
+        self._refresh()
+
+    # -- navigation -------------------------------------------------------
+
+    def _refresh(self):
+        if not self._client or not self._current_bucket:
+            return
+        self._status_label.configure(text=t("s3_loading"))
+        self._path_label.configure(text=f"/{self._current_prefix}" if self._current_prefix else "/")
+
+        def _fetch():
+            objects, prefixes = self._client.list_objects(
+                self._current_bucket, self._current_prefix)
+            self.after(0, lambda: self._display(objects, prefixes))
+
+        threading.Thread(target=_fetch, daemon=True).start()
+
+    def _display(self, objects: list[dict], prefixes: list[str]):
+        self._tree.delete(*self._tree.get_children())
+
+        # Folders first
+        for prefix in sorted(prefixes):
+            display_name = prefix[len(self._current_prefix):]
+            if display_name.endswith("/"):
+                display_name = display_name[:-1]
+            self._tree.insert("", "end", values=(
+                f"\U0001f4c1 {display_name}/", "", ""),
+                tags=("folder",),
+            )
+
+        # Files
+        for obj in sorted(objects, key=lambda o: o["Key"]):
+            name = obj["Key"][len(self._current_prefix):]
+            size = _human_size(obj.get("Size", 0))
+            modified = ""
+            if obj.get("LastModified"):
+                modified = obj["LastModified"].strftime("%Y-%m-%d %H:%M:%S")
+            self._tree.insert("", "end", values=(name, size, modified),
+                              tags=("file",))
+
+        count = len(objects) + len(prefixes)
+        self._status_label.configure(text=t("s3_items_count").format(count=count))
+        self._back_btn.configure(
+            state="normal" if self._current_prefix else "disabled")
+
+        # Show drop hint if empty
+        if count == 0:
+            self._drop_hint.place(relx=0.5, rely=0.5, anchor="center")
+        else:
+            self._drop_hint.place_forget()
+
+    def _on_double_click(self, event):
+        sel = self._tree.selection()
+        if not sel:
+            return
+        item = self._tree.item(sel[0])
+        name = item["values"][0] if item["values"] else ""
+        if not isinstance(name, str):
+            name = str(name)
+        # Check if it's a folder
+        if name.endswith("/"):
+            # Strip folder icon
+            clean = name.replace("\U0001f4c1 ", "").strip()
+            self._nav_stack.append(self._current_prefix)
+            self._current_prefix = self._current_prefix + clean
+            if not self._current_prefix.endswith("/"):
+                self._current_prefix += "/"
+            self._refresh()
+        else:
+            # Double-click file = download
+            self._download()
+
+    def _go_back(self):
+        if self._nav_stack:
+            self._current_prefix = self._nav_stack.pop()
+        else:
+            self._current_prefix = ""
+        self._refresh()
+
+    # -- actions ----------------------------------------------------------
+
+    def _upload(self):
+        if not self._client or not self._current_bucket:
+            return
+        paths = filedialog.askopenfilenames()
+        if not paths:
+            return
+        self._upload_files(list(paths))
+
+    def _download(self):
+        sel = self._tree.selection()
+        if not sel:
+            return
+        item = self._tree.item(sel[0])
+        name = item["values"][0] if item["values"] else ""
+        if not isinstance(name, str):
+            name = str(name)
+        if name.endswith("/"):
+            return  # Can't download a folder
+
+        key = self._current_prefix + name
+        save_path = filedialog.asksaveasfilename(initialfile=name)
+        if not save_path:
+            return
+
+        # Get file size for progress
+        total_bytes = self._client.get_object_size(self._current_bucket, key)
+        label = t("s3_downloading")
+        self._status_label.configure(text=label)
+        self._show_progress(label, total_bytes)
+
+        def _do():
+            ok = self._client.download_file(
+                self._current_bucket, key, save_path,
+                progress_cb=self._on_progress,
+                status_cb=self._on_transfer_status)
+            if ok:
+                self.after(0, lambda: self._on_download_done(True))
+            else:
+                self.after(0, lambda: self._on_download_done(False))
+
+        threading.Thread(target=_do, daemon=True).start()
+
+    def _on_download_done(self, success: bool):
+        self._hide_progress()
+        if success:
+            self._status_label.configure(text=t("s3_download_ok"))
+        else:
+            self._status_label.configure(text=t("s3_download_failed"))
+
+    def _delete(self):
+        sel = self._tree.selection()
+        if not sel:
+            return
+        item = self._tree.item(sel[0])
+        name = item["values"][0] if item["values"] else ""
+        if not isinstance(name, str):
+            name = str(name)
+        if name.endswith("/"):
+            return  # Don't delete prefixes
+
+        key = self._current_prefix + name
+
+        def _do():
+            ok = self._client.delete_object(self._current_bucket, key)
+            if ok:
+                self.after(0, self._refresh)
+            else:
+                self.after(0, lambda: self._status_label.configure(
+                    text=t("s3_delete_failed")))
+
+        self._status_label.configure(text=t("s3_deleting"))
+        threading.Thread(target=_do, daemon=True).start()
diff --git a/releases/ServerManager-v1.8.94-win-x64.exe b/releases/ServerManager-v1.8.100-win-x64.exe
similarity index 55%
rename from releases/ServerManager-v1.8.94-win-x64.exe
rename to releases/ServerManager-v1.8.100-win-x64.exe
index 8a1f7db..c0ea656 100644
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diff --git a/releases/ServerManager-v1.8.95-win-x64.exe b/releases/ServerManager-v1.8.101-win-x64.exe
similarity index 55%
rename from releases/ServerManager-v1.8.95-win-x64.exe
rename to releases/ServerManager-v1.8.101-win-x64.exe
index 7210972..0b964ff 100644
Binary files a/releases/ServerManager-v1.8.95-win-x64.exe and b/releases/ServerManager-v1.8.101-win-x64.exe differ
diff --git a/releases/ServerManager-v1.8.97-win-x64.exe b/releases/ServerManager-v1.8.97-win-x64.exe
deleted file mode 100644
index bfa0ebb..0000000
Binary files a/releases/ServerManager-v1.8.97-win-x64.exe and /dev/null differ
diff --git a/releases/ServerManager-v1.8.96-win-x64.exe b/releases/ServerManager-v1.9.0-win-x64.exe
similarity index 55%
rename from releases/ServerManager-v1.8.96-win-x64.exe
rename to releases/ServerManager-v1.9.0-win-x64.exe
index 017b1fa..98d0253 100644
Binary files a/releases/ServerManager-v1.8.96-win-x64.exe and b/releases/ServerManager-v1.9.0-win-x64.exe differ
diff --git a/requirements.txt b/requirements.txt
index 28860ae..f22c25f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,3 +12,5 @@ redis>=5.0.0
 requests>=2.31.0
 pywinrm>=0.4.3
 telnetlib3>=2.0.0
+boto3>=1.28.0
+windnd>=1.0.7; sys_platform == "win32"
diff --git a/tools/skill-ssh.md b/tools/skill-ssh.md
index 9ad34e6..4b0b8af 100644
--- a/tools/skill-ssh.md
+++ b/tools/skill-ssh.md
@@ -1,7 +1,7 @@
 # Скилл /ssh — управление удалёнными серверами
 
 Ты управляешь удалёнными серверами через универсальную CLI-утилиту.
-Поддерживаются: SSH, SQL (MariaDB/MSSQL/PostgreSQL), Redis, Grafana, Prometheus, WinRM (PowerShell/CMD).
+Поддерживаются: SSH, SQL (MariaDB/MSSQL/PostgreSQL), Redis, S3, Grafana, Prometheus, WinRM (PowerShell/CMD).
 
 ## ВАЖНО — Безопасность
 
@@ -29,6 +29,7 @@
 | `telnet` | `ALIAS "command"` (как ssh, но без SFTP/sudo/ключей) |
 | `mariadb` / `mssql` / `postgresql` | `--sql`, `--sql-databases`, `--sql-tables` |
 | `redis` | `--redis`, `--redis-info`, `--redis-keys` |
+| `s3` | `--s3-buckets`, `--s3-ls`, `--s3-upload`, `--s3-download`, `--s3-delete` |
 | `grafana` | `--grafana-dashboards`, `--grafana-alerts` |
 | `prometheus` | `--prom-query`, `--prom-targets`, `--prom-alerts` |
 | `winrm` | `--ps`, `--cmd` |
@@ -78,7 +79,7 @@ python ~/.server-connections/ssh.py --remove ALIAS
 
 ### Добавить сервер
 ```bash
-python ~/.server-connections/ssh.py --add ALIAS IP PORT USER PASSWORD [--type ssh|telnet|mariadb|mssql|postgresql|redis|grafana|prometheus|winrm|rdp] [--note "описание"] [--database DB] [--token TOKEN]
+python ~/.server-connections/ssh.py --add ALIAS IP PORT USER PASSWORD [--type ssh|telnet|mariadb|mssql|postgresql|redis|grafana|prometheus|winrm|rdp|s3] [--note "описание"] [--database DB] [--token TOKEN]
 ```
 - Автоматически устанавливает SSH-ключ после добавления
 - Обновляет `~/.ssh/config`
@@ -158,6 +159,34 @@ python ~/.server-connections/ssh.py --redis-info ALIAS
 python ~/.server-connections/ssh.py --redis-keys ALIAS "user:*"
 ```
 
+## S3-команды (тип: s3)
+
+### Список бакетов
+```bash
+python ~/.server-connections/ssh.py --s3-buckets ALIAS
+```
+
+### Список объектов
+```bash
+python ~/.server-connections/ssh.py --s3-ls ALIAS bucket
+python ~/.server-connections/ssh.py --s3-ls ALIAS bucket/prefix/
+```
+
+### Загрузить файл в S3
+```bash
+python ~/.server-connections/ssh.py --s3-upload ALIAS "D:/local/file" bucket/key
+```
+
+### Скачать файл из S3
+```bash
+python ~/.server-connections/ssh.py --s3-download ALIAS bucket/key "D:/local/file"
+```
+
+### Удалить объект
+```bash
+python ~/.server-connections/ssh.py --s3-delete ALIAS bucket/key
+```
+
 ## Grafana-команды (тип: grafana)
 
 ### Список дашбордов
diff --git a/tools/ssh.py b/tools/ssh.py
index 8733884..644c4b5 100644
--- a/tools/ssh.py
+++ b/tools/ssh.py
@@ -14,7 +14,7 @@ Usage (SSH):
     python ssh.py --status
     python ssh.py --info ALIAS             # full info (no passwords)
     python ssh.py --set-note ALIAS "desc"  # update server notes
-    python ssh.py --add ALIAS IP PORT USER PASSWORD [--type ssh|telnet|mariadb|mssql|postgresql|redis|grafana|prometheus|winrm|rdp] [--note "desc"] [--database DB] [--token TOKEN]
+    python ssh.py --add ALIAS IP PORT USER PASSWORD [--type ssh|telnet|mariadb|mssql|postgresql|redis|grafana|prometheus|winrm|rdp|s3] [--note "desc"] [--database DB] [--token TOKEN]
     python ssh.py --remove ALIAS
 
 SQL (type: mariadb / mssql / postgresql):
@@ -36,6 +36,13 @@ Prometheus (type: prometheus):
     python ssh.py --prom-targets ALIAS                 # list targets
     python ssh.py --prom-alerts ALIAS                  # list alerts
 
+S3 (type: s3):
+    python ssh.py --s3-buckets ALIAS                   # list buckets
+    python ssh.py --s3-ls ALIAS [bucket[/prefix]]      # list objects
+    python ssh.py --s3-upload ALIAS local bucket/key   # upload file
+    python ssh.py --s3-download ALIAS bucket/key local # download file
+    python ssh.py --s3-delete ALIAS bucket/key         # delete object
+
 WinRM (type: winrm):
     python ssh.py --ps ALIAS "Get-Process"             # PowerShell via WinRM
     python ssh.py --cmd ALIAS "dir"                    # CMD via WinRM
@@ -964,7 +971,7 @@ def add_server(args):
             i += 1
 
     # Validate server type
-    valid_types = ["ssh", "telnet", "mariadb", "mssql", "postgresql", "redis", "grafana", "prometheus", "winrm", "rdp"]
+    valid_types = ["ssh", "telnet", "mariadb", "mssql", "postgresql", "redis", "grafana", "prometheus", "winrm", "rdp", "s3"]
     if stype not in valid_types:
         print(f"ERROR: Invalid server type '{stype}'. Valid types: {', '.join(valid_types)}")
         sys.exit(1)
@@ -991,6 +998,13 @@ def add_server(args):
     elif stype in ["redis", "grafana", "prometheus"]:
         if token:
             new_server["token"] = token
+    elif stype == "s3":
+        # S3: user=access_key, password=secret_key, ip=endpoint
+        new_server["access_key"] = user
+        new_server["secret_key"] = password
+        new_server["use_ssl"] = True
+        if database:
+            new_server["bucket"] = database
     elif stype in ["winrm", "rdp"]:
         # WinRM/RDP may have additional auth fields
         new_server["auth_method"] = "password"  # default
@@ -1254,6 +1268,197 @@ def redis_keys(server: dict, pattern: str):
         r.close()
 
 
+# ── S3 commands ──────────────────────────────────
+
+def _get_s3_client(server: dict):
+    """Create and connect a boto3 S3 client from server dict."""
+    try:
+        import boto3
+        import botocore.config
+        import urllib3
+        urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
+    except ImportError:
+        print("ERROR: boto3 not installed. Run: pip install boto3", file=sys.stderr)
+        sys.exit(1)
+    endpoint = server.get("ip", "")
+    if endpoint and not endpoint.startswith("http"):
+        use_ssl = server.get("use_ssl", True)
+        scheme = "https" if use_ssl else "http"
+        port = int(server.get("port", 443))
+        if (scheme == "https" and port == 443) or (scheme == "http" and port == 80):
+            endpoint = f"{scheme}://{endpoint}"
+        else:
+            endpoint = f"{scheme}://{endpoint}:{port}"
+    config = botocore.config.Config(
+        signature_version="s3v4",
+        connect_timeout=15,
+        read_timeout=60,
+        retries={"max_attempts": 5, "mode": "adaptive"},
+        tcp_keepalive=True,
+    )
+    return boto3.client(
+        "s3",
+        endpoint_url=endpoint,
+        aws_access_key_id=server.get("access_key", ""),
+        aws_secret_access_key=server.get("secret_key", ""),
+        config=config,
+        verify=False,
+    )
+
+
+def s3_buckets(server: dict):
+    """List all S3 buckets."""
+    client = _get_s3_client(server)
+    try:
+        resp = client.list_buckets()
+        buckets = resp.get("Buckets", [])
+        if not buckets:
+            print("(no buckets)")
+            return
+        print(f"{'Name':<40} {'Created'}")
+        print("-" * 65)
+        for b in buckets:
+            created = b.get("CreationDate", "")
+            if created:
+                created = created.strftime("%Y-%m-%d %H:%M:%S")
+            print(f"{b['Name']:<40} {created}")
+        print(f"\n({len(buckets)} bucket{'s' if len(buckets) != 1 else ''})")
+    except Exception as e:
+        print(f"ERROR: {e}", file=sys.stderr)
+        sys.exit(1)
+
+
+def s3_ls(server: dict, path: str = ""):
+    """List objects in a bucket[/prefix]."""
+    client = _get_s3_client(server)
+    # Parse bucket/prefix from path
+    parts = path.split("/", 1) if path else []
+    bucket = parts[0] if parts else server.get("bucket", "")
+    prefix = parts[1] if len(parts) > 1 else ""
+    if not bucket:
+        print("ERROR: No bucket specified. Usage: --s3-ls ALIAS bucket[/prefix]", file=sys.stderr)
+        sys.exit(1)
+    try:
+        paginator = client.get_paginator("list_objects_v2")
+        kwargs = {"Bucket": bucket, "Delimiter": "/"}
+        if prefix:
+            if not prefix.endswith("/"):
+                prefix += "/"
+            kwargs["Prefix"] = prefix
+        total = 0
+        for page in paginator.paginate(**kwargs):
+            for cp in page.get("CommonPrefixes", []):
+                p = cp["Prefix"]
+                if prefix:
+                    p = p[len(prefix):]
+                print(f"  DIR  {p}")
+                total += 1
+            for obj in page.get("Contents", []):
+                key = obj["Key"]
+                if key == prefix:
+                    continue
+                name = key[len(prefix):] if prefix else key
+                size = obj.get("Size", 0)
+                modified = obj.get("LastModified", "")
+                if modified:
+                    modified = modified.strftime("%Y-%m-%d %H:%M")
+                print(f"{size:>10}  {modified}  {name}")
+                total += 1
+        print(f"\n({total} item{'s' if total != 1 else ''})")
+    except Exception as e:
+        print(f"ERROR: {e}", file=sys.stderr)
+        sys.exit(1)
+
+
+def _s3_transfer_config():
+    from boto3.s3.transfer import TransferConfig
+    return TransferConfig(
+        multipart_threshold=8 * 1024 * 1024,
+        multipart_chunksize=8 * 1024 * 1024,
+        max_concurrency=4,
+        num_download_attempts=10,
+    )
+
+
+def s3_upload(server: dict, local_path: str, remote_path: str):
+    """Upload a file to S3 with retry and resume."""
+    # Parse bucket/key
+    parts = remote_path.split("/", 1)
+    bucket = parts[0] if parts else server.get("bucket", "")
+    key = parts[1] if len(parts) > 1 else os.path.basename(local_path)
+    if not bucket:
+        print("ERROR: No bucket. Usage: --s3-upload ALIAS local bucket/key", file=sys.stderr)
+        sys.exit(1)
+    if not os.path.isfile(local_path):
+        print(f"ERROR: File not found: {local_path}", file=sys.stderr)
+        sys.exit(1)
+    size = os.path.getsize(local_path)
+    config = _s3_transfer_config()
+    max_retries = 10
+    for attempt in range(max_retries):
+        client = _get_s3_client(server)
+        try:
+            print(f"Uploading {local_path} -> s3://{bucket}/{key} ({size} bytes)...")
+            client.upload_file(local_path, bucket, key, Config=config)
+            print("OK")
+            return
+        except Exception as e:
+            delay = min(2 * (2 ** attempt), 60)
+            print(f"Attempt {attempt + 1}/{max_retries} failed: {e}", file=sys.stderr)
+            if attempt < max_retries - 1:
+                print(f"Retrying in {delay}s...", file=sys.stderr)
+                time.sleep(delay)
+            else:
+                print(f"ERROR: Upload failed after {max_retries} attempts", file=sys.stderr)
+                sys.exit(1)
+
+
+def s3_download(server: dict, remote_path: str, local_path: str):
+    """Download an object from S3 with retry."""
+    parts = remote_path.split("/", 1)
+    bucket = parts[0] if parts else server.get("bucket", "")
+    key = parts[1] if len(parts) > 1 else ""
+    if not bucket or not key:
+        print("ERROR: Usage: --s3-download ALIAS bucket/key local_path", file=sys.stderr)
+        sys.exit(1)
+    config = _s3_transfer_config()
+    max_retries = 10
+    for attempt in range(max_retries):
+        client = _get_s3_client(server)
+        try:
+            print(f"Downloading s3://{bucket}/{key} -> {local_path}...")
+            client.download_file(bucket, key, local_path, Config=config)
+            size = os.path.getsize(local_path)
+            print(f"OK ({size} bytes)")
+            return
+        except Exception as e:
+            delay = min(2 * (2 ** attempt), 60)
+            print(f"Attempt {attempt + 1}/{max_retries} failed: {e}", file=sys.stderr)
+            if attempt < max_retries - 1:
+                print(f"Retrying in {delay}s...", file=sys.stderr)
+                time.sleep(delay)
+            else:
+                print(f"ERROR: Download failed after {max_retries} attempts", file=sys.stderr)
+                sys.exit(1)
+
+
+def s3_delete(server: dict, remote_path: str):
+    """Delete an object from S3."""
+    client = _get_s3_client(server)
+    parts = remote_path.split("/", 1)
+    bucket = parts[0] if parts else server.get("bucket", "")
+    key = parts[1] if len(parts) > 1 else ""
+    if not bucket or not key:
+        print("ERROR: Usage: --s3-delete ALIAS bucket/key", file=sys.stderr)
+        sys.exit(1)
+    try:
+        client.delete_object(Bucket=bucket, Key=key)
+        print(f"Deleted s3://{bucket}/{key}")
+    except Exception as e:
+        print(f"ERROR: {e}", file=sys.stderr)
+        sys.exit(1)
+
+
 # ── Grafana commands ──────────────────────────────────
 
 def _grafana_request(server: dict, endpoint: str) -> dict:
@@ -1531,6 +1736,34 @@ def main():
         redis_keys(servers[alias], sys.argv[3])
         sys.exit(0)
 
+    # ── S3 commands ──
+    if cmd == "--s3-buckets" and len(sys.argv) >= 3:
+        _, servers = load_servers()
+        alias = _resolve_alias(sys.argv[2], servers)
+        s3_buckets(servers[alias])
+        sys.exit(0)
+    if cmd == "--s3-ls" and len(sys.argv) >= 3:
+        _, servers = load_servers()
+        alias = _resolve_alias(sys.argv[2], servers)
+        path = sys.argv[3] if len(sys.argv) >= 4 else ""
+        s3_ls(servers[alias], path)
+        sys.exit(0)
+    if cmd == "--s3-upload" and len(sys.argv) >= 5:
+        _, servers = load_servers()
+        alias = _resolve_alias(sys.argv[2], servers)
+        s3_upload(servers[alias], sys.argv[3], sys.argv[4])
+        sys.exit(0)
+    if cmd == "--s3-download" and len(sys.argv) >= 5:
+        _, servers = load_servers()
+        alias = _resolve_alias(sys.argv[2], servers)
+        s3_download(servers[alias], sys.argv[3], sys.argv[4])
+        sys.exit(0)
+    if cmd == "--s3-delete" and len(sys.argv) >= 4:
+        _, servers = load_servers()
+        alias = _resolve_alias(sys.argv[2], servers)
+        s3_delete(servers[alias], sys.argv[3])
+        sys.exit(0)
+
     # ── Grafana commands ──
     if cmd == "--grafana-dashboards" and len(sys.argv) >= 3:
         _, servers = load_servers()
diff --git a/version.py b/version.py
index 186af30..51c2381 100755
--- a/version.py
+++ b/version.py
@@ -1,6 +1,6 @@
 """Version info for ServerManager."""
 
-__version__ = "1.8.99"
+__version__ = "1.9.0"
 __app_name__ = "ServerManager"
 __author__ = "aibot777"
 __description__ = "Desktop GUI for managing remote servers"