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Software Synthesizers, Free
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| Software | Description | OS | License | File Date | Comments | Pop |
|---|---|---|---|---|---|---|
| Rebirth RB-338 v2.0.1 | Software emulation of TR-303s and one TR-808. | Windows | Freeware | 2005-09-01 | 113 | 423 |
| Abakos v2.1 | High quality virtual analogue synthesizer. [VST] | Windows | Freeware | 2006-10-21 | 5 | 290 |
| Analog Box v2.39 | Standalone modular software synthesizer that can also host VST plug-ins. | Windows | Freeware | 2008-11-24 | 3 | 229 |
| Automat v1.0.1 | Substrative synthesizer. [AU] | Mac | Freeware | 2008-09-04 | 2 | 192 |
| Additive Synth v1.1 | Simple additive synth. [AU] | Mac | Freeware | 2004-02-12 | 0 | 186 |
| [MMI] MondOSC v1.6.3 | 4 Osc monster bass synth VSTi | Windows | Freeware | 2003-09-01 | 4 | 186 |
| 4Front Bass Module v1.0 VSTi | A decent sounding natural bass synthesizer. | Windows | Freeware | 2003-07-22 | 1 | 150 |
| 4Front Piano Module v1.0 | Piano Module Synthesizer plugin | Windows | Freeware | 2003-06-21 | 4 | 138 |
| DrumSynth v2.0 | Recreate classic analogue drum sounds and invent new effects from tone and noise components | Windows | Freeware | 2000-10-01 | 44 | 136 |
| BillaBoop v0.1 | Turns Human beatboxing into drum patterns. | Windows | Freeware | 2005-07-01 | 0 | 123 |
| Rebirth RB-338 v2.0.1 | Software emulation of TR-303s and one TR-808. | Mac | Freeware | 2005-09-01 | 0 | 122 |
| Adonis v1.1 | VA / AM / FM synthesizer. [VST] | Windows | Freeware | 2007-10-29 | 0 | 117 |
| BUZZ v1.2 | Digital music composer. | Windows | Freeware | 2004-02-27 | 4 | 111 |
| amoeba v1.1 | All-in-one sample modulator, mini-synthesizer, sequencer | Mac | Freeware | 2002-08-10 | 0 | 108 |
| SpaceTheremin v1.0 | Virtual mouse-controlled theremin. | Windows | Freeware | 2007-02-02 | 0 | 98 |
| VST Plug-in Pack 7 | Pack of 30 VST plug-ins. | Mac | Freeware | 2003-11-21 | 0 | 96 |
| Guitar Tab Synthesiser | Guitar Synthesiser with tab and stave notation. | Windows | Freeware | 2004-09-24 | 2 | 86 |
| Coagula Light 1.6 | Industrial Strength Color-Note Organ | Windows | Freeware | 2003-05-08 | 12 | 85 |
| Crystal v2.4.9c AU | Semi-modular software synthesizer. [AU] | Mac | Freeware | 2004-10-11 | 1 | 80 |
| GTG FreeDrum | User-programmable drumsynth. [VST] | Windows | Freeware | 2005-08-28 | 0 | 79 |
| Analog Warfare v3.1 | Triple Osc VSTi Bass Synthesizer. [VST] | Windows | Freeware | 2006-09-09 | 2 | 79 |
| DRECEIVE R8 v1.0 | Channel strip/drum processor. [VST/AU] | Mac | Freeware | 2006-10-09 | 0 | 75 |
| Delay Lama | Offers both vocal synthesis and a real-time animated 3D interface. [VST] | Windows | Freeware | 2002-06-06 | 5 | 72 |
| GranulÙf v1.0 | Live performance software with synths, effects and more. | Mac | Freeware | 2005-07-27 | 0 | 71 |
| Remedy v1.1r3 | 2 oscilator synthesizer with an arpeggiator. [VST/AU]` | Mac | Freeware | 2007-03-06 | 1 | 71 |
| Hotelsinus Reese Bassline v1.3.1 | Drum and bass 'Reese' and DubStep bass instrument. [VST] | Windows | Freeware | 2008-08-21 | 3 | 70 |
| Minimal v1.5 | Mini groovebox style drum machine with onboard bass synth. [VST] | Windows | Freeware | 2005-06-22 | 0 | 69 |
| mda Piano VSTi 1.1 | VSTi Piano. | Windows | Freeware | 2001-04-01 | 9 | 68 |
| Arpy v1.0 | Virtual analogue synthesizer. [VST] | Windows | Freeware | 2007-06-03 | 0 | 68 |
| RubberDuck v2.1.2 | Acid and techno software synthesizer - based on the Roland TB-303. | Windows | Freeware | 2005-08-28 | 9 | 67 |
