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Dev tools · April 17, 2026

WT

Waputer – The WebAssembly Computer

Waputer is an operating system that runs entirely in the browser. When you visit the website at https://waputer.app, a kernel written in JavaScript sets up a filesystem and launches a WebAssembly program, which in turn talks to the kernel to handle the display and input. A purely terminal-based version is at https://waputer.dev. My original intention was to create programs that run in the browser that have a lot more in common with the desktop. The traditional "hello world" program is not really suited for the web. Waputer changes that. The GitHub repo at…

Waputer – The WebAssembly Computer launched on April 17, 2026 with 7 votes, #1,538 of 21,248 launches that month and more than 75% of that year's launches.

Visit waputer.app ↗Alternativestop 7% of April 2026

What it does

In the maker’s words, at launch

Waputer is an operating system that runs entirely in the browser. When you visit the website at https://waputer.app, a kernel written in JavaScript sets up a filesystem and launches a WebAssembly program, which in turn talks to the kernel to handle the display and input. A purely terminal-based version is…

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