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

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