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Wayback Machine vs Web Archives: catalog facts
Wayback Machine	Web Archives
Free Free extension from the non-profit Internet Archive.	Free Free extension with its source code on GitHub.
Browser extension	Browser extension
Official extension from the Internet Archive Saves pages to the archive in one step	Queries several archive and cache services from one place Helps recover dead or changed pages
Depends on the Internet Archive's service being available Pages not previously archived cannot be recovered	Results depend on what the archive services have stored Firefox is not listed among supported browsers
Browser extension	Browser extension
Open source	Open source
License not stated	License not stated
Not stated if an account is needed	No account needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 24, 2026

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