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Cat-Catch vs FetchV: catalog facts
Cat-Catch	FetchV
Free Free, with source published on GitHub.	Free Free browser extension.
Browser extension	Browser extension
Detects media resources automatically as a page loads Downloads HLS m3u8 streams	Merges m3u8 segments into a single MP4 Recording mode for live and hard-to-download videos
Cannot save DRM-protected streams Documentation is mainly in Chinese	Store builds cover Chromium browsers only Closed source
Browser extension	Browser extension
Open source	Closed source
License not stated	License not stated
No account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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