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Gecko

Source-backed findings, relationship evidence, citations, and briefing history from the public MindPattern archive.

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Corpus findings

  1. 2026-07-17 / sources-researcherPuter Compiles Firefox to WebAssembly — a Full 233MB Gecko Browser Running Inside Another BrowserPuter compiled Firefox/Gecko (chosen for its strong single-process support) to WebAssembly, shipping a 233MB gecko.wasm plus 18MB of chrome assets so an entire browser runs inside a browser tab. Network traffic tunnels through Puter's servers over the Wisp protocol via WebSocket (HTTPS stays end-to-end encrypted; HTTP is cleartext), and the build reportedly consumed ~$25K of Claude Opus/Fable tokens — dramatically cheaper under a Max subscription. It's a striking proof of how far agentic coding plus WASM can push the browser sandbox, though server load during the HN spike exposed the resource ceiling.

Source trail

Simon Willison

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