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ImPlay vs IINA: catalog facts
ImPlay	IINA
Free Free and open source.	Free Free and open source under the GPL 3.0.
Windows, macOS, Linux	macOS
Built on mpv's playback engine Graphical menus on top of mpv	mpv decoding with a genuinely native macOS interface Picture-in-picture, gestures, Touch Bar and a standalone music mode
Small one-developer project Interface looks like a developer tool rather than a native app	macOS 11 or newer only Nightly builds exist but the project warns they may be unusable
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License: GPL-3.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 21, 2026

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