React Cosmos 5
A tool for ambitious UI developers
React Cosmos 5 launched on December 18, 2019 with 105 votes, #256 of 2,946 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 6 years on.
What it does
React Cosmos is a dev tool for building scalable, high-quality user interfaces. It's designed to make it easy for you to test and iterate on React components. It makes debugging less painful, and it enables you to create and publish component libraries.
Sandbox for developing and testing UI components in isolation.
React Cosmos is a sandbox for developing and testing UI components in isolation. It's fast, extendable and easy to install. Our users lovefrom reactcosmos.org
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