Chromatic
Visual testing and UI review from Storybook.
ServiceFreemium
Service from Storybook's makers that captures component images on each commit and highlights visual differences for review.
When to use
To detect visual regressions in design systems and component libraries.
When to avoid
In projects without Storybook or with few visual components.
Related
From the same area, with a close purpose.
Test coverage reports on pull requests.
ServiceFreemium