Deno Desktop vs Electron vs Tauri: Which Desktop Framework Is Right for You?
JavaScript developers building desktop apps have two established options: Electron's ~100 MB bundle with bundled Chromium, or Tauri's small binaries with a Rust backend. Deno Desktop, currently in canary ahead of its Deno 2.9 release, offers a third path. It runs TypeScript throughout, is npm-compatible, cross-compiles from one machine, and offers a choice between a small WebView backend or a consistent-rendering CEF backend. Here's how all three compare on bundle size, rendering consistency, language requirements, cross-compilation, installers, and production readiness.
Quick Comparison
Current stable versions: Electron 42.4.1 (Chromium 148, Node 24.16.0), Tauri 2.11.3. Deno Desktop ships in Deno 2.9.0, canary only as of June 2026.
What Each Framework Is
Electron: The Established Standard
Electron embeds Chromium and Node.js to bring JavaScript to the desktop. Each app has a single main process running in a Node.js environment that manages BrowserWindow instances and has full OS access. Each window spawns a separate renderer process. Main and renderer communicate via IPC: ipcRenderer sends messages, ipcMain receives them.
VS Code, Slack, Discord, Signal, Notion, and Obsidian all ship on Electron. The bundled Chromium means identical rendering on macOS, Windows, and Linux, with no WebKit quirks. The Node.js runtime means the full npm ecosystem is available without extra wiring. Auto-update works on macOS and Windows out of the box via Squirrel. Linux requires the distribution's package manager.
Tauri: Small Binaries, Rust Backend
Tauri is a framework for building tiny, fast binaries for all major desktop and mobile platforms. The core process is written in Rust and has full OS access. The UI runs in the operating system's own webview: WKWebView on macOS, WebView2 on Windows, WebKitGTK on Linux. Because those webview libraries are dynamically linked at runtime rather than bundled, a minimal Tauri app can be less than 600 KB.
Tauri v2 added mobile targets (iOS and Android) and a capability-based security model where frontend code can only access native APIs you explicitly declare in capabilities/main.json. That makes Tauri the only framework here that supports five platforms from one codebase. The tradeoff is that any native functionality beyond Tauri's built-in JavaScript APIs needs Rust.
Deno Desktop: TypeScript Desktop Apps Without Rust
Deno Desktop ships in Deno v2.9.0, which is not yet in a stable release. Run deno upgrade canary to try it now. Commands, configuration keys, and TypeScript APIs may still change before the feature stabilizes.
Deno Desktop turns a Deno project into a self-contained desktop application. It offers two backends. The default WebView backend uses the OS's native webview (small, like Tauri) and the CEF backend bundles Chromium (~150 MB, consistent rendering everywhere like Electron). Unlike both Electron and Tauri, communication between the Deno runtime and the webview happens over in-process channels, not socket-based IPC, so there's no cross-process round-trip.
The simplest Deno Desktop app:
// main.ts
Deno.serve(() =>
new Response("<h1>Hello, desktop</h1>", {
headers: { "content-type": "text/html" },
})
);
deno desktop main.ts
Point it at an existing Next.js, Astro, SvelteKit, or Nuxt project and it runs with no code changes required.
Bundle Size and Memory
Bundle size is the most-searched dimension of this comparison. Electron bundles both Chromium and a Node.js runtime, which is why even a "Hello World" Electron app reaches ~100 MB or more. Tauri avoids the bundled browser engine entirely, so typical apps run 2–10 MB and a minimal app can be under 600 KB.
Deno Desktop sits between them depending on which backend you choose. The WebView backend produces roughly the same size class as Tauri (~40 MB per the official Deno comparison table). The CEF backend is ~150 MB (larger than Electron) because it bundles its own Chromium copy, and currently each Deno Desktop app bundles its own CEF copy independently.
Lev Miner's real-world benchmark using his Authme 2FA app (2022, Windows) measured Tauri at ~80 MB RAM idle vs Electron at ~120 MB RAM idle, with a 2.5 MB Tauri installer vs 85 MB for Electron. These numbers are pre-Tauri v2 and from a simple app, but they remain the most cited Tier 1 benchmark for the comparison.
Activity Monitor on macOS shows all Chromium helper processes individually. Developers building Electron apps have observed actual app-side memory of 50–60 MB in normal use, but users opening Activity Monitor see the full Chromium process tree and conclude Electron is heavier than it is.
Rendering Consistency
This is the tradeoff that costs the most developer time day-to-day, especially on teams targeting Linux.
Tauri uses three different rendering engines: WebView2 (Chromium-based) on Windows, WKWebView (WebKit) on macOS, and WebKitGTK on Linux. A Tauri developer writing in a dev.to thread put it directly: "What actually costs me time is WebView inconsistency. CSS that works fine on Windows will break on Linux because WebKitGTK is behind on prefixes or renders fonts differently." For IDE-type apps with dense layout requirements, that cross-platform CSS testing overhead adds up.
Electron ships Chromium everywhere, giving the same rendering on all three platforms with no per-platform CSS testing needed.
Deno Desktop gives you a choice. In WebView mode you get the same three-engine problem as Tauri. In CEF mode you get bundled Chromium and identical rendering everywhere, the same guarantee as Electron at the same ~150 MB cost.
The opencode AI coding assistant migrated from Tauri back to Electron, confirmed via multiple GitHub PRs ("refactor(desktop): consolidate desktop-electron into desktop package"). The current app ships Electron-based installers. No official explanation was posted, but the pattern of a terminal/IDE-type app choosing rendering consistency over binary size matches the tradeoff other developers describe.
Language and Ecosystem
The language requirement is the sharpest decision gate between these three frameworks.
Electron uses Node.js in the main process. If your team writes JavaScript or TypeScript, you can ship Electron without learning anything new, and the full npm ecosystem is available.
Tauri uses Rust for the core process. For most applications, Tauri's built-in JavaScript APIs cover what you need: Eric Richardson at DoltHub reported being "able to fully replicate the functionality of the Electron version using the JavaScript APIs and some minimal Rust code." But running a Node.js service alongside a Tauri app (DoltHub's GraphQL layer, for example) requires compiling it to a binary and running it as a sidecar, since Tauri doesn't bundle a Node runtime.
Deno Desktop is TypeScript throughout. The npm ecosystem is available via Deno's Node compatibility layer. There's no Rust requirement. The pitch is Tauri's architecture (small default binary, in-process communication) without the Rust barrier.
Cross-Compilation
Tauri's requirement to build on each target OS is a real workflow cost for solo developers and small teams without macOS + Windows + Linux CI runners. Deno Desktop's --target flag mirrors deno compile --target, building for all three platforms from one machine with backend binaries downloaded automatically. The only exception is macOS .dmg, which requires a macOS host because it relies on hdiutil.
Distribution and Installers
Deno Desktop's gaps are significant for production distribution. Windows MSI is not yet implemented, so you need a third-party tool like Inno Setup or NSIS. Linux .deb and .rpm are also not yet implemented. macOS notarization requires a separate xcrun notarytool submit step.
Tauri has its own gap on Windows. It supports .exe and .msi bundles but not .appx/.msix. Richardson at DoltHub found this a blocker: "Currently, Tauri only supports .exe and .msi bundles on Windows. This means your Microsoft Store entry will only link to the unpacked application."
Auto-update differs meaningfully. Electron ships full binaries via Squirrel and covers macOS and Windows only, with no built-in Linux auto-update. Tauri uses a plugin that also downloads full builds. Deno Desktop uses bsdiff patches (smaller downloads, with automatic rollback and manifest polling built into the runtime), but Windows auto-update is not yet supported.
Deno Desktop Limitations
Because Deno Desktop is canary-only, its current gaps are worth listing plainly:
- Not yet stable: ships in Deno 2.9.0, APIs may still change
- No Windows MSI or Linux .deb/.rpm installer outputs
- No auto-update on Windows (bsdiff auto-update works on macOS and Linux only)
- macOS notarization requires a separate
notarytoolstep - No iOS or Android support
- No native clipboard or secure-storage APIs (use the Web Clipboard API from the webview side)
- DevTools only available in CEF mode, not WebView mode
- Each app currently bundles its own CEF copy (~150 MB each), with a shared runtime on the roadmap
Real-World Case Studies
DoltHub: Electron to Tauri Evaluation
Eric Richardson at DoltHub evaluated migrating the Dolt Workbench (a Next.js + GraphQL + Electron SQL workbench) to Tauri. The Nextron library they used to wire Next.js to Electron appeared unmaintained and had started producing bugs. Tauri's Next.js integration proved cleaner, with setting output: 'export' in the Next config being all that was needed.
Richardson found Tauri's APIs fit naturally into the app code. But DoltHub held off on the full migration for two reasons: no .appx/.msix on Windows (breaking their existing Microsoft Store listing) and codesigning issues with macOS universal binaries. They stayed on Electron.
opencode: Tauri Back to Electron
opencode, an AI coding assistant desktop app, migrated from Tauri back to Electron. Multiple GitHub PRs confirm the migration: "docs: update desktop app references from Tauri to Electron" and "refactor(desktop): consolidate desktop-electron into desktop package." The current app ships Electron-based installers (.dmg, .exe, .deb, .rpm, .AppImage). No official explanation was posted, but the pattern of a terminal/IDE-type app choosing Electron aligns with the rendering-consistency argument other developers make for similar apps.
When to Use Each Framework
Three rules of thumb:
- Start new JS/TS projects on Electron if you need production-stable tooling today and consistent rendering matters.
- Choose Tauri if binary size or mobile is a hard requirement and you're comfortable with Rust (or can stay within its JavaScript API surface).
- Watch Deno Desktop if you're starting a new TypeScript project and can tolerate canary. It's the one worth evaluating, especially for teams with existing web apps they want on the desktop.
Summary
Electron is the battle-tested choice for teams that need rendering consistency and the Node ecosystem today. Tauri wins on binary size and is the only option with mobile support, at the cost of a Rust requirement for native code. Deno Desktop is the new TypeScript-native option that removes the Rust barrier and offers both a size-optimized WebView backend and a rendering-consistent CEF backend, but it's canary-only, with missing installer formats and no Windows auto-update yet. For production apps shipping today, Electron and Tauri are the safe choices. Deno Desktop is the one to evaluate for your next TypeScript project.