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YDL-UI vs Stacher: catalog facts
YDL-UI	Stacher
Free Free and open source under the MIT licence.	Freemium The yt-dlp GUI is free without limits; optional Stacher Premium supports the project.
Windows	Windows, macOS, Linux
No command line needed to use youtube-dl Bundles youtube-dl and ffmpeg	Point-and-click access to yt-dlp options Can install and manage yt-dlp and ffmpeg
Built around youtube-dl rather than the more active yt-dlp Development has been quiet since early 2024	Linux builds target Debian-based distributions Relies on third-party yt-dlp and ffmpeg
Downloadable app	Downloadable app
Open source	Closed source
License: MIT	License not stated
Not stated if an account is 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 September 23, 2026

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