copy/v86

x86 PC emulator and x86-to-wasm JIT, running in the browser observed · 2026-10-11

github.com/copy/v86 · homepage · JavaScript · BSD-2-Clause (permissive) observed · 2026-10-11

Health v2 · maintenance only

85/100

Activity 98
Release rhythm 60
Longevity 100

Flags: prerelease_only no_readme

How is this computed?

round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-10-21. Adoption (stars, forks) is never an input.

gap_med: n/a
age_days: 4732
days_rel: 12
days_push: 12
n_releases_24m: 1

Full methodology

Adoption not part of the score

23575 stars · 1917 forks observed · 2026-10-11

What it is AI-extracted, prompt v1, taxonomy v1, 2026-10-12, confidence 0.97

v86 is a JavaScript library that emulates an x86 PC and includes a JIT compiler targeting WebAssembly. It runs entirely in the browser, allowing various operating systems and software to be executed client‑side.

Use cases

Run legacy x86 operating systems or applications directly in a web page
Create interactive demos of low‑level software for education or documentation
Test software behavior on x86 hardware without installing a VM
Provide sandboxed environments for users to experiment with OS installations
Integrate an x86 emulator into web‑based development tools or IDEs

When to choose

You need a client‑side x86 emulator that works in any modern browser
You want to avoid server‑side virtualization for security or cost reasons
You require WebAssembly‑based performance for faster emulation
You are building educational tools or demos that showcase low‑level OS behavior

When to avoid

You need native‑speed performance for compute‑intensive workloads
Your application requires direct hardware access or privileged instructions
You are targeting environments without JavaScript or WebAssembly support

Facets

library · maturity active

simulation web-development browser x86 wasm pc-emulator virtualization js web-assembly emulator computer-architecture javascript

2 sources

homepage: https://copy.sh/v86/ · fetched 2026-09-28 · 6588c93e1904
registry_npm: https://registry.npmjs.org/v86 · fetched 2026-09-28 · 07b1a9c4c3b3

Member repositories

Repository	Role	Health v2
copy/v86	main	85

For agents

markdown · JSON · MCP: product_card(name="copy/v86")

Data as of 2026-10-19T08:05:51.212177+00:00 · Report a problem