Nexus is a Rom synthesizer. [VST/AU/RTAS]

Software emulation of TR-303s and one TR-808.

MIDI/KARAOKE/Multimedia Player.

Logic Pro is part of Logic Studio, a comprehensive software package that delivers everything a musician needs to write, record, edit, mix, and perform in the studio and on the stage. [Hosts AU Plugins & Effects]

Karaoke player supporting CDG (MP3+G, OGG+G, WAV+G), MIDI (.KAR, .MID) and MPEG formats.

Guitar tabulature editing and playback software for MacOS and MacOSX

Sampler. [VST/AU/RTAS/Standalone]

Reverb plug-in. [VST/AU]

Quickly convert your whole MacOSX music library to mp3.

Overture is a professional standard notation software that works for Mac OSX. [Hosts AU]

Convert values for musical use: tempo, transpose, delay and tap tempo

Compose, record, remix, improvise and edit your musical ideas. Works with the Ableton Push Controller [Hosts VST Plugins]

A real-time software synthesizer based on the SoundFont 2 specifications

Piano One is virtual piano instrument based on the Yamaha C7 concert grand piano. [VST/AU]

Tool for live recording and manipulation of audio loops, with features similar to those of the Gibson Echoplex Digital Pro and the Electrix Repeater. [VST/AU]

Music synthesizer that sings lyrics.

Plug-in for creating lo-fi vinyl sound effects. [VST]

Top-quality sound and music production system, transforming your computer into an inspiring modular studio.

A sampled acoustics real-time convolution reverb plug-in. [AU/VST/MAS/RTAS/HTDM]

Virtual analog synth with some special features like oscillator hard-sync and frequency modulation. [VST/AU]

Audio recording, editing, and management solution.

Pro Tools is an advanced audio and music production platform. Go here to buy the full version of Pro Tools.

Offers controls and visual feedback for the stereo stage. [VST/AU/RTAS]

An alarm clock for mac that can play MP3, MIDI and WAV.

MIDI/Karaoke player for KDE4.