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

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