Storybook vs Testing Library: licensing, GitHub activity, and what each is actually for. Neutral comparison, no paid rankings.
Storybook: Open source. 91,266 GitHub stars. UI component development environment with built-in testing capabilities, documentation, and visual regression tools.
Testing Library: Open source. 19,664 GitHub stars. Simple and complete testing utilities that encourage good testing practices. Supports React, Vue, Angular, and more.