Kandelo – a POSIX-compatible multi-process WASM kernel for the browser
Kandelo is an open-source, Wasm-based multi-process kernel that runs POSIX programs in browsers and Node.js. Kandelo is still experimental, but it already runs a substantial range of existing software. Do you have use cases for this? We are trying Kandelo as a new foundation for WordPress Playground which runs server-side WordPress entirely in the browser. Kandelo also looks promising as a sandbox for running agents in the the browser and on the command line. On the side, we've been playing with porting games and desktop environments and even compiling runnable programs within Kandelo. Yet…
Kandelo – a POSIX-compatible multi-process WASM kernel for the browser launched on August 20, 2026 with 12 votes, #920 of 23,274 launches that month and more than 90% of that year's launches.
In plain words
Kandelo is an open-source WebAssembly kernel that enables POSIX-compatible programs to run in web browsers and Node.js environments. Built as an experimental multi-process system, it can execute existing software including WordPress server-side applications, sandbox environments for agents, games, and desktop environments. The tool is designed for developers exploring new ways to run traditional applications in browser and command-line contexts.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
Kandelo is an open-source, Wasm-based multi-process kernel that runs POSIX programs in browsers and Node.js. Kandelo is still experimental, but it already runs a substantial range of existing software. Do you have use cases for this? We are trying Kandelo as a new foundation for WordPress Playground which runs…
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