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LMMS vs Hydrogen: catalog facts
LMMS	Hydrogen
Free Free and open source under the GPL 2.0.	Free The open-source application is available without a license fee.
Windows, macOS, Linux	Windows, macOS, Linux
Piano roll, beat sequencer, song editor and mixer in one free program Over fifteen instrument plugins included before you add anything	Detailed sample controls and MIDI integration
No audio recording, so live instruments and vocals need another program Stable releases are infrequent; 1.2.2 dates from 2020	It focuses on drum sequencing rather than a complete recording studio.
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License: GPL-2.0
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 22, 2026

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