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Ganymede vs TwitchDownloader: catalog facts
Ganymede	TwitchDownloader
Free Free and open source under the GPL-3.0 license.	Free Free and open source under the MIT licence.
Self-hosted	Windows, Command line
Archives both VODs and live streams with chat Archive files remain usable without Ganymede	Downloads VODs, clips and chat in one tool Renders chat into a video for archiving or editing
Supports Twitch only Video and rendered chat archives need substantial disk space	Desktop GUI is Windows only Works only with Twitch content
Self-hosted	Downloadable app
Open source	Open source
License: GPL-3.0	License: MIT
Not stated if an account is needed	Not stated if an account is 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.