Open-source software, hardware, and woodworking plans for building a complete Virtual Pipe Organ from scratch.
Masterpiece
A cross-platform player for Hauptwerk and GrandOrgue sample sets. It builds the instrument's own console out of the set's definition and plays it — up to 9.3x less memory than holding every sample resident, so a 44-stop organ fits on a Raspberry Pi. Standalone, VST3, LV2 and AU.
Explore Masterpiece →
OpenPipes OS
64-bit Linux tuned for real-time organ audio. Ships with GrandOrgue, JACK, PipeWire, and CALF. Available for Raspberry Pi and standard x86 PCs.
Explore OpenPipes OS →
Hardware & 3D Parts
Solderless, chainable I2C modules — stop tabs, pistons, draw knobs, pedals, and sensors — each with its printable housing. Plus pure 3D-printed toe pistons. Drop in standard switches and mount, no machining.
Explore Pipe2C →
Console Plans & Tools
Four ready-to-build designs, portative to three-manual, in rectangular cuts any cut shop can handle. Plus the OpenPipes Organ Designer: seven parametric console types, rebuilt as you drag, that hand you a STEP model, a nested cut list and dimensioned drawings.
Explore Plans & Tools →Support the Project
OpenPipes is free. If it's been useful, consider contributing.