react-cosmos/react-cosmos
Sandbox for developing and testing UI components in isolation observed · 2026-08-28
Health v2 · maintenance only
94/100
- Activity 98
- Release rhythm 86
- Longevity 100
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: 44.5
- age_days: 4592
- days_rel: 16
- days_push: 16
- n_releases_24m: 9
Adoption not part of the score
8683 stars · 384 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
React Cosmos is a sandbox for developing and testing React UI components in isolation, with a fixture-based file convention and a playground UI for browsing, previewing, and manipulating components. It integrates with Vite, Webpack, Next.js, and React Native, supports a full-stack plugin system, and can export an interactive component library to static hosting.
Use cases
- develop react components in isolation
- browse and preview component states with fixtures
- test ui components with responsive viewports
- build an interactive component library for static hosting
- prototype react components quickly
- debug component props via a control panel
- extend a component workshop with plugins
- work with react native or next.js components in a sandbox
When to choose
- you want a fast, lightweight Storybook alternative focused on isolated component development
- your project uses Vite, Webpack, Next.js, or React Native and needs a component playground
- you want file-system based fixtures to define component states
- you need a plugin system to customize the component development workflow
When to avoid
- your primary goal is publishing polished design-system style guides or documentation sites
- you need deep ecosystem integrations, addons, or community size that Storybook offers
- you are not working with React or React Native
Facets
application · maturity active
ui-components testing developer-tools cli plugin-system documentation frontend web-development developer-tools testing cross-platform cli react component-workshop storybook-alternative fixtures component-explorer vite webpack nextjs react-native static-export nodejs web-server
10 sources
- readme: https://github.com/react-cosmos/react-cosmos · fetched 2026-08-28 · 3caaf8edaa7d
- homepage: https://reactcosmos.org · fetched 2026-08-29 · 9ae46622c53f
- site_page: https://reactcosmos.org/docs · fetched 2026-08-29 · 19a90abc9531
- site_page: https://reactcosmos.org/about · fetched 2026-08-29 · 14105a2e2588
- site_page: https://reactcosmos.org/docs/getting-started · fetched 2026-08-29 · 36ee4ca12114
- site_page: https://reactcosmos.org/docs/user-interface · fetched 2026-08-29 · 981ae9fcb2dc
- site_page: https://reactcosmos.org/docs/getting-started/vite · fetched 2026-08-29 · b29014f4ea24
- site_page: https://reactcosmos.org/docs/getting-started/webpack · fetched 2026-08-29 · cbff85022d41
- site_page: https://reactcosmos.org/docs/getting-started/react-native · fetched 2026-08-29 · a2ad1c09bd34
- site_page: https://reactcosmos.org/docs/getting-started/next · fetched 2026-08-29 · 1eaeb9e53c98
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| react-cosmos/react-cosmos | main | 94 |
For agents
markdown · JSON · MCP: product_card(name="react-cosmos/react-cosmos")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem