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VideoCacheView vs Cat-Catch: catalog facts
VideoCacheView	Cat-Catch
Free Freeware from NirSoft, free to use and redistribute unmodified.	Free Free, with source published on GitHub.
Windows	Browser extension
Scans several browsers' caches in one pass Copies cached videos out for later playback	Detects media resources automatically as a page loads Downloads HLS m3u8 streams
Cannot merge YouTube's separate video and audio streams Firefox must be closed before its cache is written to disk	Cannot save DRM-protected streams Documentation is mainly in Chinese
Downloadable app	Browser extension
Closed source	Open source
License: Freeware	License not stated
No account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 2, 2026

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