Open-source Native Instruments 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.

Mixxx is free DJ software for performing live mixes. It runs on GNU/Linux, Windows and macOS, and is aimed at DJs and artists who want free software for mixing tracks in front of an audience.

Repository topics point to MIDI and HID controller support, and the Mixxx documentation includes a manual, a wiki, a hardware compatibility list and a guide to creating skins. Stable versions are recommended for live use, development releases are offered for testing, and the repository itself is for people who want to follow the latest changes.

Mixxx is written in C++ with the Qt framework. The README states that it is released under the GPLv2, while the repository metadata lists the licence as other. Development is tracked on GitHub Issues, the community chats on Zulip and forums, and translators contribute through a dedicated localization process.