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KMPlayer vs Screenbox: catalog facts
KMPlayer	Screenbox
Free Free to download and use.	Free Free and open source.
Windows, macOS	Windows
Built-in codecs for most formats Plays 4K and 3D video	Broad format support through LibVLC Native Windows interface
Closed source Little detail available from the official site about current features	Windows only Fewer advanced options than full VLC
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 24, 2026

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