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Arm64js - ARMv8-A emulator that runs real Linux in a browser tab

Hi all, This project started with me getting annoyed that to try a 2 MB TUI tool I have to install it, while my browser happily runs a 40 MB React webpage re-rendering on any move. So I thought it must be possible to run a TUI app on a thin Linux in the browser. Many months later arm64js has been built. An ARMv8-A emulator written in Rust that compiles to WebAssembly and can boot real Alpine Linux in a webpage. Computation (CPU) speed is of course lower than native, but shells, TUI ap

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痛点：开发者想试用或展示 CLI/TUI 工具时，用户需本地安装，缺少低成本、可分享的浏览器内实时演示方案。

目标用户：CLI/TUI 工具开发者、开源项目维护者、需要展示终端产品的商业软件团队。

证据：my attempt to turn it into a product: developers can create a live demo of their CLI/TUI app to showcase it in the browser. There's a free tier, and it's free for open-source projects.

变现：Freemium SaaS：开源免费，商业/私有项目按演示数量、品牌定制、分析、嵌入和团队协作收费；也可授权 JS SDK。

MVP：不做完整 ARM 模拟器，用 xterm.js + 预录终端会话或 WebContainers 做一个可嵌入的 CLI/TUI 演示托管与播放器，支持自定义品牌、访问统计和线索收集，2 周内可上线。

竞品：asciinema、terminalizer、WebVM/CheerpX、v86、JSLinux、StackBlitz WebContainers、CodeSandbox、Replit

摘要：Reddit 发布 arm64js：用 Rust/WASM 写的 ARMv8-A 模拟器可在浏览器启动 Alpine Linux，并衍生出 Demoshell，让开发者创建 CLI/TUI 应用实时演示。已免费开放并有多个开源项目 gallery 案例，但未披露付费价格或收入，付费意愿证据有限。