Get the free harmonic composition workstation
Arbit runs standalone and inside your DAW as a free VST3/CLAP MIDI plugin. Free is a complete DAW: a clip-based arranger with audio and MIDI clips, MIDI recording, tempo/time-signature maps, built-in instruments, SF2/SFZ libraries, VST3 instrument hosting, Airwindows + Donut Devices effects, automation lanes, device panel, and export. Pro unlocks sampling, vocals, pitch-aware audio transformation, and the video media machine.
Windows
Windows 10 (1909) or later, 64-bit. Installer includes Arbit's VST3/CLAP plugin and standalone app. Free starts instantly on first launch with an email.
macOS
macOS 11 Big Sur or later. Zip package includes the VST3/CLAP plugin, standalone app, and installer script. The installer ad-hoc signs bundles and clears quarantine.
Linux
Self-extracting installer for modern desktop Linux distributions. Installs VST3, CLAP, standalone, desktop launcher, and optional soundfonts.
Audio I/O
Arbit Free standalone supports ASIO, CoreAudio, JACK, ALSA, and PipeWire. Plugin mode uses your DAW's audio engine.
Plugin Formats
Arbit ships as VST3 and CLAP on every platform. It outputs per-note tuning through the best channel your host supports.
GPU Acceleration
Vulkan / Metal renderer for the piano roll. CPU fallback included. Smooth scroll and zoom on thousand-note projects.
Project Format
.arbit files preserve every harmonic link, pitch bend curve, and expression lane. MIDI import and export with microtuning.
Install
Install Arbit
The 0.2.5 installers are smoke-tested on GitHub-hosted Windows, macOS, and Linux runners.
Windows
Run Arbit-Windows-Setup.exe. Choose VST3, CLAP, standalone, and Bitwig controller components in the wizard, then restart your DAW.
macOS
Extract Arbit-macOS.zip, open Terminal in that folder, then run: chmod +x install-macos.sh && ./install-macos.sh. If macOS still warns, right-click Arbit and choose Open.
Linux
Run: chmod +x Arbit-Linux-Installer.sh && ./Arbit-Linux-Installer.sh. Portable zip users can run install-linux.sh from the extracted folder.
Need audio transformation too?
Arbit Free includes the clip arranger, audio and MIDI editing, instruments, effects, hosting, and export. Arbit Pro adds sampling, vocals, harmonic pitch correction, and the video media machine.