Singcast is an open-source multi-platform proxy client built with Flutter and powered by a customized sing-box core. It supports Clash subscription links and configuration files out of the box — just import and go.
Available on Windows, Linux, macOS, and Android.
- Desktop: Core runs as an independent privileged process communicating via JSON-RPC (IPC), keeping the UI sandboxed and stable.
- Mobile: Core is loaded as a native library via FFI, integrated tightly with the platform VPN service.
- TUN mode: Transparent proxy with automatic route management — no manual system proxy setup needed.
- Support Clash subscriptions and configuration files
- System proxy and TUN mode (transparent proxy)
- Proxy node selection and latency testing
- Real-time traffic statistics
- Subscription management, import and update subscription links
- Log viewer with export
- System tray on desktop
Make sure to install the following dependencies before using
sudo apt-get install libayatana-appindicator3-
Install
Flutter v3.41+Follow the Flutter official documentation to set up the environment for your target platform. For example, Android development requires Android SDK.
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Download core
Download the core for your platform from singcast-cli Releases and place it at:
# Desktop (IPC standalone process) windows/core/singcast-core.exe linux/core/singcast-core macos/Frameworks/singcast-core # Mobile (FFI native library) android/app/libs/libsingcast.aar ios/Frameworks/libsingcast-darwin.xcframework
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Build and run
# Install dependencies flutter pub get # Generate code dart run build_runner build --delete-conflicting-outputs # Run flutter run -d linux
If the subscription keeps loading or returns an error, the provider may be restricting certain User-Agent strings. Try changing the UA in Settings → General → Subscription User-Agent (e.g. clash-verge/v2.0.0, clash-meta), then update the subscription again.