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PYM Player vs KMPlayer: catalog facts
PYM Player	KMPlayer
Free Free, with optional donations via PayPal or bitcoin.	Free Free to download and use.
macOS	Windows, macOS
Plays MKV, AVI, WMV, WebM and other formats via FFmpeg Automatic subtitle download from NapiProjekt	Built-in codecs for most formats Plays 4K and 3D video
Website and subtitle source are aimed at Polish users macOS only, and a large download of about 260 MB	Closed source Little detail available from the official site about current features
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
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 23, 2026

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