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Volumouse vs EarTrumpet: catalog facts
Volumouse	EarTrumpet
Free Freeware from NirSoft, free to use and distribute unmodified.	Free Free and open source.
Windows	Windows
Flexible rules decide when the wheel controls volume Per-application volume and on-screen indicator	Per-app volume sliders from the taskbar Quicker than opening the Windows volume mixer
Does not work with elevated apps unless it also runs as administrator under UAC Requires a wheel mouse and sound card	Windows only Focused on volume control rather than audio effects or routing
Downloadable app	Downloadable app
Closed source	Open source
License: Freeware	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked September 23, 2026

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