Tauri or Electron? An Architectural Choice for Desktop Apps

My last few desktop projects were built with Tauri; the audio editor AudioLoom and my system monitor are the biggest of them. Still, when someone asks "which one should I use?", my answer isn't always Tauri. Both let you write the interface in HTML, CSS and JavaScript; the real difference is what runs underneath it.

What runs underneath?

Electron bundles a Chromium browser and a Node.js runtime inside every app. The interface is drawn by the same engine on every platform, and the backend logic is written in JavaScript.

Tauri doesn't bundle a browser; it uses the web view the operating system already provides (WebView2 on Windows, WKWebView on macOS, WebKitGTK on Linux). The backend is written in Rust, and the interface can only reach it through the commands you define:

// A command defined on the Rust side
#[tauri::command]
fn read_stats(path: String) -> Result<Stats, String> {
    collect_stats(&path).map_err(|e| e.to_string())
}

// Called from the interface
// const stats = await invoke('read_stats', { path });

Size, memory and security

Because Electron ships a browser with every app, installers are usually tens and often more than a hundred megabytes, and each app runs its own browser processes. Tauri borrows the browser from the operating system, so it can ship much smaller packages and tends to use less memory at idle. In a system monitor that stays open all day, you can really feel that difference.

Tauri is also more locked down by default. In Electron, a misconfigured window can expose the full power of Node.js to interface code, so context isolation and bridges have to be set up carefully. In Tauri, the interface can only reach the commands you explicitly allow. A Rust backend also removes a large share of memory-safety bugs at compile time.

The price of Tauri

Every choice has a price. Because Tauri renders the interface with a different engine on each platform, small differences in CSS and web API behavior can show up; a screen that looks right on Windows has to be tested separately on Linux. You need Rust for the backend, and if the team only knows JavaScript, the learning curve is real. Electron, with its mature ecosystem, direct access to Node.js packages and identical rendering everywhere, is still a very strong option.

My rough rule: if it's a lightweight tool that stays open all day or works close to system resources, and Rust is already in the stack, Tauri. If it's a complex interface that must look pixel-identical everywhere, leans on the Node.js ecosystem, or the team only knows JavaScript, Electron. The right question isn't "which is better?" but "where and how will this app live?"