Tauri
Tauri is a modern toolkit for building tiny, fast, and secure desktop applications using a web frontend and a rust backend. It is the leading alternative to Electron.
Core Architecture
- Frontend: Any web framework (React, Vue, Svelte, or even plain JS/HTML). It is rendered using the System Native WebView (e.g., WebView2 on Windows).
- Backend: Written in Rust. Handles system-level tasks like file I/O, networking, and high-performance processing.
- Bridge: A secure, message-passing IPC (Inter-Process Communication) layer that connects the JS frontend to the Rust backend.
Key Advantages
- Extremely Small Binaries: Because it doesn't bundle a browser (like Chromium), Tauri apps are often 20-50x smaller than Electron apps.
- Memory Efficiency: Rust is significantly more efficient than Node.js, and using the native WebView reduces RAM overhead.
- Security by Default: Capabilities (like file system access) must be explicitly enabled in the configuration. It uses a "deny-by-default" security model.
- Performance: Heavy-duty logic can be offloaded to Rust, which provides near-native execution speed.
Tauri vs. Electron
| Feature | Electron | Tauri |
|---|---|---|
| Backend | Node.js | Rust |
| Browser | Bundled Chromium | Native WebView |
| Bundle Size | ~100MB | ~5MB |
| Security | Flexible | Strict (Sandboxed) |