Nodebox, a free open-source Webcontainer alternative
scelar.com
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Nodepod is a free, open-source Node.js runtime for the browser—a lightweight alternative to WebContainers that runs npm packages, Express servers, Vite HMR, and more entirely client-side.
Key Highlights Instant & Tiny: Boots in ~100ms at 600KB gzipped (vs. WebContainers' 2-5s multi-MB WASM). Full Stack Support: 40+ Node polyfills (fs, http, child_process), custom shell, npm installs (e.g., React/Vue/Svelte previews). No Servers/Lock-in: Pure browser (Web Workers + Service Worker); MIT licensed, no pricing drama.
Try it in wZed, our Zed-inspired browser IDE: https://wzed.scelar.com/. GitHub: https://github.com/ScelarOrg/NodePod. npm: @scelar/nodepod.