Mac, Free
| Software | Description | OS | License | File Date | Comments | Power |
|---|---|---|---|---|---|---|
| ReArrange-A v1.2 | A beatslicing pluggo plug-in. | Mac | Freeware | 2004-06-01 | 0 | 35db |
| Rebirth RB-338 v2.0.1 | Software emulation of TR-303s and one TR-808. | Mac | Freeware | 2005-09-01 | 5 | 85db |
| Rebuilder v1.0 | Regenerates the input audio using a large matrix of oscillators. [VST] | Mac | Freeware | 2004-03-04 | 1 | 45db |
| Remedy v1.1r3 | 2 oscilator synthesizer with an arpeggiator. [VST/AU]` | Mac | Free | 2 | 45db | |
| RetroBandLite v1.5.7 | Distortion plug-in. [VST] | Mac | Freeware | 2007-09-20 | 0 | 35db |
| RetroPlayer v1.7.0 | Listen to music as if it was played by an analog record player. | Mac | Free | 2006-07-27 | 0 | 40db |
| Reversinator v1.00 | Realtime audio-reversing plug-in. [VST] | Mac | Freeware | 2004-05-05 | 0 | 50db |
| RhapsOGL X Beta 5 | A visual OpenGL plug-in for iTunes on MacOS X | Mac | Freeware | 0 | 40db | |
| rider | AudioUnit which automatically rides the gain to keep the apparent volume level consistent. | Mac | Freeware | 2004-06-01 | 0 | 50db |
| Ring On Time v1.41e | Schedule the playing of sound, MP3, MIDI files. | Mac | Freeware | 2005-10-10 | 0 | 45db |
| RIP Vinyl | A free, monophonic VST synthesizer | Mac | Freeware | 2003-10-20 | 0 | 45db |
| RoomMachine 844 | A real time, digital audio room simulator. | Mac | Freeware | 2000-05-01 | 0 | 45db |
| Rough Rider v1.2.0 | Modern compressor with a bit of "vintage"-style bite and a uniquely warm sound. [VST/AU] | Mac | Freeware | 2012-03-07 | 0 | 45db |
| S(m)exoscope | Waveform visualisation plugin. [osx] | Mac | Freeware | 2003-12-01 | 0 | 65db |
| Sample Rate and Tempo Transposition Calculator | Sample Rate and Tempo Transposition Calculator | Mac | Freeware | 1998-05-01 | 2 | 45db |
| SampleTank FREE | Free version of SampleTank with 204 Sounds and more than 500 MB of samples [AU/VSTi/RTAS] | Mac | Freeware | 2010-10-15 | 3 | 70db |
| sandbox | Modulate audio with sine waves & FM synthesis | Mac | Freeware | 2002-06-02 | 1 | 35db |
| Sapling v1.0 | Real-time audio file remixing, with randomization features | Mac | Freeware | 2008-08-15 | 0 | 35db |
| SBaGen | Binaural beats software | Mac | Freeware | 2 | 60db | |
| Scala 2.26 | Musical scale and tuning editor and analysis tool | Mac | Freeware | 2010-09-15 | 0 | 55db |
| Score Date v2.3 | It is an open source software that helps musicians learn music reading. | Mac | Free | 2012-01-04 | 0 | 45db |
| SDMI v1.0 | A basic Samples transfer program, for SMDI-compatibles Synths and Samplers | Mac | Freeware | 2003-09-28 | 0 | 35db |
| Seelewaschen v1.2 | Generative sound environment. | Mac | Freeware | 2006-10-20 | 0 | 50db |
| seq541 1.0 | SEQ541 is a MIDI pattern sequencer. | Mac | Freeware | 2004-11-09 | 0 | 50db |
| sfArkXT for MacOS X | Decompression utility for sfArk compressed SoundFonts | Mac | Freeware | 2003-10-02 | 0 | 60db |
| Sfront v0.91 | MPEG 4 Structured Audio Decoder (source) | Mac | Freeware | 2006-07-30 | 0 | 45db |
| ShockBox 1.4 | ShockBox is an Internet and desktop "audio" browser | Mac | Freeware | 2000-01-09 | 2 | 50db |
| Shockwave & Flash Players (PPC) | Shockwave 7.0.3 & Flash 4 Players for Power Macintosh | Mac | Freeware | 1999-12-06 | 2 | 55db |
| Shockwave 6 & Flash Player for 68K | Shockwave 6 & Flash Player for Macintosh 68K | Mac | Freeware | 1998-05-10 | 2 | 50db |
| ShortWave v1.1 | Simulates distortions of old shortwave radio, vinyl/shellac/victrola, movies. | Mac | Freeware | 2004-02-12 | 0 | 35db |
