MUS
Mus library and Mus synth
Synth String
Audio Unit
TinySynth
A retro inspired FM synthesizer
Harrasy 1 & 2
Synth1 Presets for insperation!
Melodia Synthesizer
Virtual Semi-Modular Polyphonic Synthesizer
Podróżnik Synthesizer
Semi-modular Drum Synthesizer
Dungeon Reaper
Free Reaper instrument presets
Fake YM2612
Sega Sound is good
RaccouBass 0.2.9
Music is life
FYOUMBOX (Accelerometer Android Synth)
Tilt your phone, Make noise
Hekit: Vital Presets Vol. 1
Vital Bank Vol.1 by Hekit
Audio Hacks Volume 2
Custom Wavetables and Presets for Serum
One Hand Band
One Hand Band allows users to make music/noise solo or remotely with friends.
Touch Theremin
A Touch Screen Theremin
4TRK
A retro inspired Music Workstation
Chop
Dynamic range compressor
SynkDate
Sync your Playdate with Synth
Cloudioid
bloopbox and hyperarp vst
Octograph
An optical synthesizer with sfz+wav export support
shamsynth1
A synthesiser plugin made with JUCE / C++
Stryk BETA
Rhythmic Hybrid Drum Synth/Sampler
The Multi-Fader Drone
VST3 / Standalone synth plugin which can make fast strange warping sounds and slow ominous drones!