List of awesome opensource synth project. Software and Hardware

Software

• VCVRack/Rack - Open-source virtual Eurorack DAW
• amsynth/amsynth - Analog Modelling Synthesizer
• mtytel/helm - A free polyphonic synth with lots of modulation
• LouisGorenfeld/DigitsVst - An advanced phase distortion synthesizer
• asb2m10/dexed - FM multi plaform/multi format plugin
• marianboda/miriyaki - Subtractive VST synth

Hardware

• pichenettes/shruthi-1 - Shruthi-1, a digital/analog hybrid MIDI monosynth.
• pichenettes/ambika - Hybrid 6-voice polysynth with flexible voicecard architecture
• Ixox/preenfm2 - preenFM2 firmware

Modular

• mxmxmx/O_C - polymorphic CV generator eurorack module
• mxmxmx/temps_utile- - 6x clock generator eurorack module
• mxmxmx/terminal_tedium - raspberry pi 2 / pi 3 / zero (W) / pi a+ / b+ eurorack stereo codec (wm8731) breakout board
• Korb-Modular/01_PUSHER - Force Sensitive CV-Controller. Eurorack Module
• Korb-Modular/02_FOLDER - Dual Wave-Folded VCO. Eurorack Module
• Korb-Modular/03_DVCA - Dual VCA. Eurorack Module
• Korb-Modular/04_DLFO - Dual LFO. Eurorack Module
• pichenettes/eurorack - Mutable Instruments' Eurorack Modules.