Virtual instruments and plug-ins manufacturer for both Mac and PC in VST and AU formats.

Free MIDI generators and sequencers software for Windows and Mac OS X

Majorthird is developing Mac OS X music education software.

EnergyXT official Website

FingaMIDI is a free, open source, replacement driver for the ADB trackpad found in the Apple G4 Ti PowerBook and probably the Snow iBook, G4 iBook and aluminium PowerBooks. It allows the inbuilt trackpad to be used as a three-axis MIDI controller, sending x, y and z (pressure) data as parameter change messages.

SysEx is a free MIDI librarian program for the Macintosh. SysEx can transmit and receive system exclusive (sysex) messages via MIDI and can save and load these messages to and from disk

Official website of G-Player, the first native Giga player for Mac OS X.

Tools and utilities for the Macintosh: iPod synchronizing, display free memory, control an iDisk, and more...

Makes ShowControlPro, a Mac platform program for control of live audio via MIDI

Jesusonic is a fully programmable effects processor for guitar, bass, vocal and general use. Jesusonic is available in software form, and soon, in hardware form.