synth
| Software | Description | OS | License | File Date | Comments | Power |
|---|---|---|---|---|---|---|
| Infiltrator | Vocoder with filterbank effects for Chameleon [mac] | Mac | Freeware | 2003-09-17 | 0 | 60db |
| Instruments Builder 4 | MIDI to WAV | Windows | Freeware | 2002-09-15 | 0 | 60db |
| InternalMIDI 2.5.3 | Creates a MIDI node for the internal General MIDI synthesizer of BeOS | BeOS | Freeware | 2001-07-26 | 0 | 40db |
| InternalMIDI PPC 2.5.3 | Creates a MIDI node for the internal General MIDI synthesizer of BeOS | BeOS | Freeware | 2001-07-26 | 0 | 50db |
| Invector v1.0 | Morph or vector synthesizer. [VST] | Windows | Freeware | 2008-05-20 | 0 | 50db |
| iPiano v2.1.6 | Versatile music and MIDI tool for Mac OS X | Mac | Shareware | 2003-10-22 | 0 | 60db |
| Ironhead v1.0 | Morphing percussion synth. [VST] | Windows | Demo | 2008-01-12 | 0 | 40db |
| JellyFilter v3.0.1 | Polyphonic lead synthesizer. [VST] | Windows | Freeware | 2008-07-31 | 0 | 50db |
| jellyfish v1.0 | 4-oscillator synth with multiple modulation methods between the oscillators. [VST] | Windows | Demo | 2008-05-05 | 0 | 45db |
| Jew Harp v1.0 | Sample based jew harp, vargan, khomuz, maultrommel synth [VST] | Windows | Freeware | 2005-04-17 | 0 | 50db |
| Juno 6 v1.0 | Analogue Synth that emulates the sound technics of the original Roland Juno 6/60 Synth. [VST] | Windows | Free | 2004-09-10 | 0 | 90db |
| JustJ Robosynth 1.0 | Robosynth is a "Pro" version of Roboline. | Windows | Freeware | 2004-10-20 | 1 | 50db |
| JX10 | VST software synth | Windows | Freeware | 2001-03-01 | 3 | 55db |
| JX10 | VST software synth | Mac | Freeware | 2001-03-01 | 0 | 55db |
| JXSynth 1.2 | VST 2.0 compatible software synthesizer | Windows | Demo | 2001-04-08 | 1 | 45db |
| Kantos 1.0 VST/DX | Software-based synthesizer | Windows | Demo | 2003-05-23 | 0 | 55db |
| KarmaFX Plugin Pack v2.1 | Plug-in pack - filter, delay, reverb and modular synth. [VST] | Windows | Free | 2008-11-18 | 0 | 80db |
| KarmaFX Synth Modular v1.09 | Advanced Simulated Analog Modular Synthesizer. [VST] | Windows | Demo | 2009-11-05 | 0 | 40db |
| Kassiopeia! v2.0 | Casio CZ-inspired Dual Line Phase Distortion Synthesizer. [VST] | Windows | Freeware | 2009-12-14 | 0 | 45db |
| KeyMaster | KeyMaster is realtime MIDI performance software. | BeOS | Freeware | 1998-03-04 | 1 | 45db |
| KickMaker 2.0 | Synthesizer designed specifically to create good kick drum sounds. [VST] | Windows | Freeware | 2010-10-30 | 1 | 55db |
| KickMaker 2.0 | Synthesizer designed specifically to create good kick drum sounds. [VST/AU] | Mac | Freeware | 2010-10-30 | 1 | 75db |
| Kinisis v1.02 | Synthesizer with an unusual "Timeline" interface. [VST] | Windows | Demo | 2009-11-11 | 0 | 40db |
| Kinisis v1.02 | Synthesizer with an unusual "Timeline" interface. [VST/AU] | Mac | Demo | 2009-11-11 | 0 | 45db |
| Komplexer v1.010 | Classic synth sound powered by 5 oscillators, 2 multimode filters, 4 ADSDSR envelopes and 3 LFOs. [VST] | Windows | Demo | 2006-10-19 | 0 | 45db |
| KORG Legacy Collection | Emulate three KORG synthesizers. [VST/Stand-alone] - See where KORG came in our list of the best cheap synths. | Windows | Demo | 2013-04-25 | 0 | 65db |
| KORG Legacy Collection | Emulate three KORG synthesizers. [VST/AU/Stand-alone]. Go to the full commercial version of KORG Legacy Collection | Mac | Demo | 2013-04-25 | 1 | 65db |
| Korg Z1 Editor 2004 1.5 | Korg Z1 patch, bank, multiset and pattern editor. | Windows | Shareware | 2005-01-28 | 1 | 50db |
| ksclpt14.zip | Kawai K1 Synthesizer Librarian 1.4 | Atari | Shareware | 1994-07-03 | 0 | 45db |
| Kubik v2.5 | Wavetable sequencer synthesizer that can create a vast array of sophisticated moving sounds by moving through a wavetable of 64 waveforms. [VST] | Windows | Demo | 2005-04-22 | 0 | 35db |
