Open-source FL Studio alternatives

LMMS is an open-source, cross-platform digital audio workstation made for music production. It includes a Song Editor for arranging melodies, samples, patterns and automation, a Pattern Editor for beats, a Piano Roll for editing melodies, and a Mixer for combining tracks.

More than 15 synthesizer plugins come with it by default. The mixer offers an unlimited number of channels and effects, and automation can be user-defined or driven by computer-controlled sources. It works with many standards, including SoundFont2, VST2 instruments and effects, LADSPA, LV2 and GUS Patches, and it has full MIDI support with MIDI file import and export.

LMMS is written in C++ and licensed under GPL-2.0. The project provides a user manual, a showcase, a sharing platform, a developer wiki and internal documentation. Contributors are welcome to help with programming, artwork, testing and demo songs, and are asked to file an issue or ask on Discord before building a large feature.

Ardour is a digital audio workstation, free and open source, that runs on Windows, Linux and macOS. It is built for recording, editing, mixing and mastering audio and MIDI projects, from capturing vocals and live instruments to producing beats and preparing tracks for streaming.

Recording starts from an audio interface, microphone or keyboard, and material can be imported from a hard drive or the Freesound database. Editing tools include cutting, moving, stretching, trimming, crossfading, transposing and quantizing with unlimited undo and redo, while the mixer offers faders, automation, EQ, dynamics, sends, inserts and support for external control surfaces.

Its core audience is audio engineers who want full control of their tools for long sessions, along with musicians who record real instruments. Ardour supports plugin formats such as LV2 and VST and connects through JACK. It is written in C++, and the GitHub repository is a mirror of the project's source code.