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WACUP vs foobar2000: catalog facts
WACUP	foobar2000
Free Free to download, with optional support through Patreon, PayPal or Ko-fi.	Free Freeware. The author describes it as an advanced freeware audio player; there is no paid…
Windows	Windows, macOS, Android, iOS
Compatible with plug-ins for classic Winamp-era players Plug-in based design that can be tailored to taste	Gapless playback and full ReplayGain support Easily customisable interface layout on Windows and macOS
Still a preview build rather than a final release Plug-in SDK for new plug-ins not yet available	Closed source, so the code cannot be audited or forked No official Linux build
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 September 23, 2026	Official website Full listing and sources Checked September 20, 2026

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