stackblitz/webcontainer-core

Dev environments. In your web app. observed · 2026-08-28

github.com/stackblitz/webcontainer-core · homepage · MIT (permissive) observed · 2026-08-28

Health v2 · maintenance only

40/100

Activity 17
Release rhythm 35
Longevity 100

Flags: no_releases

How is this computed?

round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.

gap_med: n/a
age_days: 1939
days_rel: n/a
days_push: 498
n_releases_24m: 0

Full methodology

Adoption not part of the score

4632 stars · 273 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

WebContainers is a browser-based Node.js runtime from StackBlitz that lets web apps run full-stack JavaScript dev environments entirely in the browser. This repository is the central hub for issues and bug tracking, with the API distributed as the @webcontainer/api npm package.

Use cases

run node.js apps in the browser
embed interactive coding tutorials in a web app
build an online IDE for full-stack javascript
let users run npm packages without installing anything
create in-browser playgrounds for node.js SDKs
preview full-stack apps from a PR in the browser

When to choose

you need instant, zero-setup Node.js dev environments embedded in a web app
you're building interactive coding education, docs, or playgrounds
you want disposable, secure server-side JavaScript execution client-side

When to avoid

you need languages or runtimes beyond Node.js/JavaScript
your app cannot set COOP/COEP headers for cross-origin isolation
you need heavy native modules or long-running production server workloads

Facets

library · maturity active

interpreter developer-tools cli file-system web-framework developer-tools web-development frontend education browser-extensions browser wasm webcontainers in-browser-nodejs stackblitz dev-environments interactive-coding wasm-runtime online-ide nodejs web-server

4 sources

readme: https://github.com/stackblitz/webcontainer-core · fetched 2026-08-28 · 5d98ddd1c433
homepage: https://webcontainers.io · fetched 2026-08-29 · e018cd807456
site_page: https://webcontainers.io/guides/quickstart · fetched 2026-08-29 · 740c6d46d03f
site_page: https://webcontainers.io/tutorial/1-build-your-first-webcontainer-app · fetched 2026-08-29 · 301820018d21

Member repositories

Repository	Role	Health v2
stackblitz/webcontainer-core	main	40

For agents

markdown · JSON · MCP: product_card(name="stackblitz/webcontainer-core")

Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem