Tunefish is a free synthesizer instrument for Windows, Mac and Linux.
Tunefish is a very tiny virtual analog synthesizer. It is developed to fit into about 10kb of compressed machine code while still producing an audio quality that can compete with commercial synthesizers. This site was created to make the VST/AU version of it available to the public.
PULS is a free monophonic pulse wave synthesizer instrument for Windows.
PULS is a monophonic pulse wave synthesizer with simple controls but complex sounds. From 2 pulse wave oscillators you can get chunky basses, scorching leads, retro chiptune, dusty lofi and oddball noises. With an unusual isometric pixel-art interface, what it lacks in knobs, it makes up for in sound.
Ultrakiller is a freeware synthesizer instrument plug-in for Windows PC.
ULTRAkILLER is NOVAkILL’s latest uber-synth.
It has two oscillators, each of which offers multiple forms of synthesis. They run through two independant multi-mode filters with multiple routing opportunities. Three envelopes, two LFO and a modulation matrix make for almost endless possibilities.
The Ultrakiller plug-in is available for Windows VST (32-bit).
Sonigen Modular is a free VST instrument plug-in for Windows PC.
Sonigen Modular is a modular software synthesizer which combines the freedom and flexibility of classic modular synthesis with the benefits of a modern software implementation. The user interface is quick and intuitive to use while still affording the sound designer great freedom. The audio processing algorithms are of high quality while still being CPU efficient.