tinyjs

Your backend, a ~600 KB window process, and your plain HTML/CSS/JS — ~6 MB on all three platforms. The window is the webview the OS already ships.

Tauri does the same, and does it well — but its backend is Rust, and you compile it. It also ships a window and little else: dialogs, clipboard, notifications, global shortcuts, filesystem, keychain, autostart, deep links are plugins you add. Here they're just the API, and the 6 MB is all of it.

Page ⇄ backend RPC over a Unix socket in a private temp dir. Nothing listens, nothing collides, nothing to scan.

Backend runs on txiki.js — files, sockets, processes, FFI, sqlite, fetch, WebSocket.

Frontend edits swap into the live window; backend edits restart the process. No build step in dev.

Real menu bar (About + Quit included), file panels, alert / confirm / prompt — answered by AppKit, not divs.

Point the window at a URL and it behaves like a browser — dialogs, downloads, popups, find — with a capability gate deciding what that origin may call.

Every project ships a skill file, so coding agents already know the whole API.

A 4.4 MB native app that shelves every example and installs, updates, and removes them in one click. The catalog updates itself from the examples repo — and carries per-platform downloads.