What Storybook does
Storybook is an open-source frontend workshop for building UI components and pages in isolation, without needing data, APIs, or business logic. It supports React, Vue, Angular, Web Components, and HTML. Developers save hard-to-reach UI states as stories for development, testing, and QA. Named features include interaction tests, visual tests, accessibility checks for WCAG and ARIA issues, coverage reports, and snapshot tests of markup. It generates UI documentation automatically, supports Markdown docs, and can be published as a website. Stories can be embedded in wikis, Markdown, and Figma, and Storybook can run as a CI step. It is aimed at frontend developers and teams building UI, and the project is free.
How Storybook compares with its closest alternatives
All 5 closest alternatives have a free plan, as Storybook does. Among the 2 that list a starting price, the cheapest is Figma at $15 a month and the median is $82. 4 of the 5 offer an API, as Storybook does. Storybook offers a web app. Of the alternatives, all 5 offer a web app. Storybook was founded in 2016; the alternatives were founded between 1998 and 2023, 3 of them earlier. The alternatives with a known headquarters are in the United Kingdom and the United States.