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Argos vs BackstopJS: catalog facts
Argos	BackstopJS
Freemium Free to start, with paid subscription plans for larger usage.	Free Free and open source.
Web	Command line
Works with Playwright, Storybook, Cypress and Vitest Diffs text snapshots as well as screenshots	Compares new screenshots against approved reference images Command-line tool that fits into build pipelines
Requires an account and a CI setup Paid plans needed beyond the free tier	Requires configuring scenarios by hand Commits to the main repository are infrequent
Hosted service	Downloadable app
Closed source	Open source
License not stated	License not stated
Account needed	No account needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.