Tauri vs Electron vs PWA: choosing a desktop runtime in 2026.

The three real options for shipping a desktop app in 2026 — and the four trade-offs that decide between them. From a studio that has shipped against all three runtimes for different buyers.

The three options.

  • Electron: bundles Chromium + Node. Mature, widely used, large bundle (~80–120MB), generous capabilities.
  • Tauri: uses the OS WebView + Rust backend. Small bundle (~5–15MB), fast, but you're building against the WebView the user has, not one you control.
  • PWA: a web app the user "installs" via the browser. Zero install friction. Limited native API access. Updates are atomic, rollouts are painless.

The four trade-offs that actually decide.

1. Native API access.

If you need filesystem, USB, BLE, microphone with low latency, native menus, multi-window — Tauri or Electron. PWAs in 2026 still don't have full native parity, despite the gap closing every year. Don't fight it; if you need native, pick a native runtime.

2. Bundle size.

If your buyer has fleet-managed devices and IT cares about install size — Tauri. Electron's 100MB+ bundle is a non-trivial conversation in regulated environments — we've taken Tauri specifically because a buyer's IT had explicit bundle-size policies.

3. WebView consistency.

Tauri uses the system WebView (WebKit on macOS, WebView2 on Windows, WebKitGTK on Linux). That means inconsistent rendering across platforms. Electron ships its own Chromium and is consistent everywhere — and that consistency is sometimes worth 100MB. Visual-fidelity-critical products (creative tools, anything with novel canvas/WebGL) usually pick Electron for this reason.

4. Update story.

PWA wins this — zero work, every reload is current. Electron and Tauri both have auto-update libraries; Electron's are more mature, Tauri's are catching up. If your update cadence is daily, the friction matters.

The decision tree.

  • "We need native APIs and a small bundle, and the team can handle Rust." → Tauri.
  • "We need native APIs but the team is JS-only and bundle size doesn't matter." → Electron.
  • "Web is fine, install friction is the enemy, native isn't required." → PWA.
  • "We need cross-platform pixel perfection (creative app, design tool)." → Electron, almost always.
  • "We're shipping to fleet-managed regulated environments." → Tauri, usually — the bundle size and Rust security story land well in compliance reviews.

What we've learned shipping Tauri.

Tauri 2.x in 2026 is production-ready for B2B desktop apps. The friction we hit:

  • WebView differences between macOS WebKit and Windows WebView2 caused two specific bugs that took a day each. Plan for it.
  • The Rust-side IPC layer is excellent but the docs lag. Read the source.
  • Auto-update flows on Windows require code-signing the right way; budget half a day plus the cert.

The shortest version.

Native + small bundle + Rust-comfortable team: Tauri. Native + JS-only + bundle doesn't matter: Electron. Web is enough: PWA. There isn't a wrong answer; there are wrong matches between answer and constraint.

See the private register for a production reference. File an intent if you're picking a runtime.