A BrowserPod alternative that runs binaries as they ship
No Wasm rebuild of your tools: the arm64 Linux build that already exists is the one that runs.
Try it in your browser
npm i @uncontained/sdk yarn add @uncontained/sdk pnpm add @uncontained/sdk bun add @uncontained/sdk deno add npm:@uncontained/sdk Uncontained vs BrowserPod, side by side
BrowserPod, from Leaning Technologies, is a WebAssembly kernel with a Linux-compatible syscall interface. Programs are built for its Wasm target; third-party binaries are not supported yet.
| Capability | Uncontained | BrowserPod |
|---|---|---|
| Real Linux kernel | Yes, Linux 6.18 | No, a Wasm kernel with a Linux-like syscall interface |
| Third-party native binaries | Yes, unmodified arm64 | No; Wasm builds only |
| Native npm packages (esbuild, sharp) | Yes, as published | Only with a Wasm build |
| Node.js | 26.13.0 | 22, modified |
| Bun | 1.4.4 | Polyfill of some APIs |
| apt and Debian packages | Yes, Debian 13 | No |
| WASI and WASIX | WASI 0.1, 0.2, 0.3 and WASIX | Not adopted, by choice |
| Network | Raw TCP, UDP and TLS | HTTP, HTTPS and WebSocket; more through their edge servers |
| Claude Code in the tab | Yes | Yes, in BrowserCode |
BrowserPod facts are from Leaning Technologies’s own pages, read on 10 November 2026.
When BrowserPod is the better fit
BrowserPod lists mobile browsers as supported and gives public URLs to ports through its edge network. If you need a public preview URL from the tab, that is built in there.
Questions about switching from BrowserPod
Do I have to rebuild my tools for Uncontained?
- No. Debian’s arm64 packages and vendor Linux binaries run as published. Node and Bun programs run on the browser’s JavaScript engine automatically.
Does Uncontained support WASI?
- Yes: WASI 0.1, 0.2 and 0.3, WASIX, and the real wasmer CLI with registry packages.
Does it need a server?
- No sandbox server. The machine runs on the visitor’s computer; a relay is only needed for outside network access.