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BackstopJS vs Ghost Inspector: catalog facts
BackstopJS	Ghost Inspector
Free Free and open source.	Paid Paid subscription service with a free trial.
Command line	Web, Browser extension
Compares new screenshots against approved reference images Command-line tool that fits into build pipelines	Tests recorded in the browser without code Scheduled runs for ongoing site monitoring
Requires configuring scenarios by hand Commits to the main repository are infrequent	Hosted service only, tests run on the vendor's infrastructure Paid after the trial period
Downloadable app	Hosted service, Browser extension
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 1, 2026

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