Pterosaur is a free 16 oscillator VST synthesizer instrument. It’s loosely inspired by the classic Supersaw sound of the Roland JP-8000 in that the output of each oscillator can be independently detuned and panned, creating a very rich sound.
Whistler is a free VST synthesizer instrument that produces its sound by sending random noise through resonating bandpass filters.
Foxglove is a free monosynth VST instrument featuring a waveshaping section which can be modulated by the internal envelope generators and LFOs, or automated by a VST host.
Feldspar is a VST instrument software synthesizer featuring a range of tempo-based modulation options.