Edisyn Is A Free, Open-Source Synth Patch Editor

Edisyn is a free and open source synthesizer patch editor library, written in pure Java. It runs on MacOS, Linux, and Windows.

The developer says that Edisyn is “particularly good at exploring the space of patches. It has to my knowledge the most sophisticated set of general-purpose patch-exploration tools of any patch editor available.”

Currently supported synths include:

Alesis D4 and DM5
Casio CZ Series (CZ101, CZ1000, CZ3000, CZ5000, CZ-1)
DSI Prophet ’08
E-Mu Morpheus and Ultraproteus (Single, Hyperpreset, and MidiMap modes)
E-Mu Proteus 1, 1XR, 2, 2XR, 3, 3XR, and 1+Orchestral
Kawai K1, Kawai K1m, and Kawai K1r (Single and Multi Modes)
Kawai K4 and Kawai K4r (Single, Multi, Drum, and Effect Modes)
Kawai K5 and K5m (Single and Multi Modes, plus single-cycle wave uploading)
Korg SG Rack (Single and Multi Modes) and Korg SG Pro X
Korg MicroKorg (Single and Vocoder Modes)
Korg Microsampler
Korg Wavestation SR (Performance, Patch, and Wave Sequence Modes)
Oberheim Matrix 1000
Red Sound DarkStar and DarkStar XP2
Roland D-110 (Tone and Multi Modes)
Roland JV-80 and JV-880 (Single and Multi Modes)
Waldorf Blofeld and Waldorf Blofeld Keyboard (Single and Multi Modes, plus Wavetable uploading)
Waldorf Microwave II, XT, and XTk (Single and Multi Modes)
Yamaha DX7 Family (DX7, TX7, TX802, TX216/TX816, Korg Volca FM, Dexed, DX200, DX9)
Yamaha 4-Op FM Family (DX21, DX27, DX100, TX81Z, DX11, TQ5, YS100, YS200, B200, etc.) (Single and (for TX81Z and DX11) Multi Modes)
Yamaha FB01 (Single and Multi Modes)
Yamaha TG33, SY22, and SY35 (Single and (for TG33) Multi Modes)

Edisyn has infinite levels of undo, CC and NRPN mapping and learning, offline modes, randomization, merging, nudging, hill-climbing, patch constriction, per-parameter customization, real-time parameter updates, test notes, microtonal editing and more.

It’s available via Github.