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Qmmp vs WACUP: catalog facts
Qmmp	WACUP
Free Free and open source.	Free Free to download, with optional support through Patreon, PayPal or Ko-fi.
Windows, Linux	Windows
Familiar Winamp and XMMS style interface with skins Plugin system with visualisations and MIDI support	Compatible with plug-ins for classic Winamp-era players Plug-in based design that can be tailored to taste
Batch tag editor is still experimental Skinned interface looks dated to some users	Still a preview build rather than a final release Plug-in SDK for new plug-ins not yet available
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-2.0	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 23, 2026

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