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FAAC vs qaac: catalog facts
FAAC	qaac
Free Free and open source under the LGPL-2.1-or-later license.	Free Free to download, with source published on GitHub.
Command line	Windows, Command line
Encodes AAC-LC and HE-AAC v1 Supports mono through 7.1 audio	Uses Apple's AAC encoder on Windows Encodes both AAC and ALAC
Patent royalties may apply to some uses	Command line only, no graphical interface Windows only
Downloadable app	Downloadable app
Open source	Open source
License: LGPL-2.1	License: Public Domain
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 2, 2026

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