The best open source alternative to Audacity is Tenacity. If that doesn't suit you, our users have ranked more than 100 alternatives to Audacity and 17 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Audacity are AudioMass, DarkAudacity, Android Audio Recorder and Wavacity.
Frinika is a free (licensed under GNU GPL) complete music workstation software containing sequencer, midi support, soft synthesizers, audio recorder, piano roll/tracker/notation editing and more. The goal of Frinika is to be a complete platform for making music with your...
GTK Wave Cleaner is a GUI application to remove noise (hiss, pops and clicks) from audio files in WAV and similar formats.
A desktop application that allows you to record audio from specific applications on Linux. Built with Deno, Svelte, and WebView.
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An excellent app for cleaning up audio recordings / noise removal, but not an audio editor, so not really an alternative for Audacity.