Ardour is a digital audio workstation. You can use it to record, edit and mix multi-track audio. (GPL)
Linux - FreeBSD - macOS
Audacity is free, open source software for recording and editing sounds. (GPL)
Linux - FreeBSD - Windows - macOS
LMMS aims to be a free alternative to popular programs like FruityLoops/FL Studio, Cubase and Logic allowing you to produce music with your computer. (GPL)
Linux
MusE is a MIDI/Audio sequencer with recording and editing capabilities written by Werner Schweer. MusE aims to be a complete multitrack virtual studio for Linux. (GPL)
Linux - FreeBSD
Qtractor is an Audio/MIDI multi-track sequencer application written in C++ around the Qt4 toolkit. (GPL)
Linux
Rosegarden is a professional audio and MIDI sequencer, score editor, and general-purpose music composition and editing environment. (GPL)
Linux - FreeBSD
Traverso is a complete solution from recording to CD Mastering. (GPL)
Linux - Windows - macOS
WaveShop is a free, open-source audio editor for Windows XP/Vista/7/8. Waveshop's features include peak, RMS and spectral analysis, normalizing, fading, sample rate conversion, audio generation, and more, all with unlimited undo and comprehensive help. (GPL)
Windows
Zrythm is a cross-platform digital audio workstation designed to be featureful and easy to use. Zrythm offers limitless automation, multi-backend support and is free software. (AGPL)
Cross-platform
9 applications