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almostnode

Library that runs Node.js, Next.js, Vite, and Express in the browser, about 250 KB

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Aboutalmostnode.dev

almostnode is a lightweight JavaScript library that runs Node.js, Next.js, Vite, and Express entirely in the browser. It is about 250 KB gzipped, starts instantly, and needs no server. It is open source and installs from npm.

Install
npm install almostnode
For an agent

Use it for live code playgrounds in docs or a design system site. Test the frameworks you need, because coverage is partial.

Why it is here. It makes in-browser code previews light enough for docs.

Install command, framework, licence and component list.
Notable for
  • About 250 KB
  • No server
  • Next.js and Vite
Provenance

Verified 2026-10-09. HTTP 200. https://almostnode.dev/ (HTTP 200, page fetched 2026-10-09), https://github.com/macaly/almostnode (GitHub API, 1181 stars), depo.zip listing https://www.depo.zip/tools/j579dqssvz7mjyeathk84v4b9s81pctg

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