SyncthingTray
LTR — Long-Term Release · one-click self-update built in.
A lightweight system tray manager for Syncthing on Windows, built with C# (.NET 8 WinForms).
Screenshots
Features
- Launches Syncthing hidden (no console window)
- Tray icon shows running state (sync/pause icons) with dark-themed context menu
- Start, stop, and restart Syncthing from the tray menu
- Pause/resume syncing via menu or middle-click
- Open the Syncthing Web UI with a double-click
- Synced Folders submenu — open any synced folder in Explorer
- Device connect/disconnect notifications
- File conflict (pull error) detection
- Network auto-pause on public networks (WMI-based)
- Auto-update check for Syncthing (daily, rate-limited)
- Dark-themed Settings GUI with discovery toggles
- Config check utility (validates exe, process, API, discovery)
- Help window with usage guide
- Graceful shutdown via Syncthing REST API with process kill fallback
- Crash detection with audible alert when Syncthing exits unexpectedly
- Run at Windows startup (shortcut in Startup folder)
- Portable mode — auto-detected on removable drives (disables startup shortcut)
- First-run wizard — auto-opens Settings when no config exists
- Overclick safeguard — cooldown on rapid Start/Stop/Restart/Pause actions
- Single-instance enforcement — kills previous instances on launch
- Tray icon recovery after Explorer restarts
Download
Grab the latest from the Releases page:
SyncthingTray.exe — self-contained, no .NET runtime needed (~147 MB)
Alternative install methods (coming soon)
# WinGet
winget install itsnateai.SyncthingTray
Requirements
- Windows 10/11
- Syncthing — download
syncthing-windows-amd64-*.zip and extract syncthing.exe
> Note: This is a lightweight alternative to Syncthing Tray (Qt-based, ~80 MB). SyncthingTray focuses on simplicity — just tray management, no built-in file browser or embedded web view.
Setup
- Download
SyncthingTray.exe from Releases
- Download Syncthing and extract
syncthing.exe to the same folder
- Run
SyncthingTray.exe — Syncthing starts automatically in the background
- Right-click the tray icon > Settings to enter your API key
Configuration
Right-click the tray icon and select Settings to configure:
- Double-click action — configurable: Open Web UI, Force Rescan, Pause/Resume, or Do Nothing
- Middle-click action — configurable: same options as double-click
- Run on startup — creates/removes a Windows Startup shortcut
- Start browser — open the Web UI when Syncthing launches
- Sound notifications — play sounds on device connect/disconnect, file errors, unexpected stop
- Auto-pause on public networks — pause syncing on public Wi-Fi
- Startup delay — wait N seconds before launching Syncthing
- Syncthing path — custom path to
syncthing.exe
- Web UI URL — custom Syncthing Web UI address
- API Key — required for pause/resume, status polling, and graceful shutdown. Find it in the Syncthing Web UI under Actions > Settings > API Key.
- Discovery — toggle Global Discovery, Local Discovery, and NAT Traversal
- Auto-update — check for Syncthing updates daily
Settings are saved to SyncthingTray.ini in the application directory.
Building from Source
Requires .NET 8 SDK.
dotnet build -c Release
dotnet test
Publish as single-file .exe
dotnet publish SyncthingTray/SyncthingTray.csproj -c Release -r win-x64 --self-contained true -p:PublishSingleFile=true
Output: SyncthingTray/bin/Release/net8.0-windows/win-x64/publish/SyncthingTray.exe
License
MIT
