# leaningtech/webvm

Virtual Machine for the Web

Repository: https://github.com/leaningtech/webvm
Canonical: https://ross.abutalabs.com/products/webvm
Homepage: https://webvm.io
Language: JavaScript
License: Apache-2.0
License Family: permissive
Topics: cheerp, cheerpx, cpp, tailscale, vm, wasm, webassembly, xterm-js, repl, lwip, webvm
Last push: 2026-08-17T08:07:00+00:00

## Health v2 (maintenance only)
Score: 67/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 98, release rhythm 8, longevity 100
- inputs: {"age_days": 1675, "days_push": 16, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 17351, forks 3303 (observed 2026-08-28T04:11:17.994798+00:00)

## What it is
WebVM is a Linux virtual machine that runs entirely client-side in the browser via WebAssembly, powered by the CheerpX x86-to-WASM JIT engine. It runs an unmodified Debian distribution with native toolchains and supports Tailscale networking.

## Use cases
- run a linux vm in the browser
- try debian without installing anything
- sandboxed linux environment in webassembly
- test linux toolchains from a browser tab
- demo a linux desktop environment online

## When to choose
- you need a zero-install Linux environment accessible from any browser
- you want a sandboxed, client-side VM for demos or education
- you need Tailscale-connected browser networking

## When to avoid
- you need full hardware virtualization or KVM-level performance
- you require ICMP/ping or other low-level networking operations
- you need a persistent, production-grade server environment

## Facets
- artifact type: application
- maturity: active
- function: wasm, terminal-ui, networking
- domain: web-development, developer-tools
- platform: browser, wasm
- tags: linux-vm, x86-emulation, cheerpx, tailscale, client-side, virtualization

## Member repositories
- leaningtech/webvm (main) score 67

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:17.994798+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:03:10.913511+00:00, confidence not recorded.
  - readme: https://github.com/leaningtech/webvm (fetched 2026-08-28T04:11:17.994798+00:00, sha 5b76d34714ff)
  - homepage: https://webvm.io (fetched 2026-08-29T08:01:38.426440+00:00, sha 11bf4572aa95)
- Data as of 2026-08-30T08:39:29.467469+00:00.