Stillwell Audio focus on VST plugins that are easy to use, easy to get great results out of, and easy on your pocketbook.

Spectrum Ananyler, Satellite Tracking Software for Macintosh.

Developer of ExsManager OSX software for Logic and Exs24

Mac OS X Server, OpenStep, and NEXTSTEP software development.

Audio plug-in development by Manuel Schleis.

Editor of many applications for Macintosh inluding Emu Music Player audio files reader using Quicktime.

Makers of VocALign, the unique audio alignment tool

Sensomusic, electronic music site by Olivier Sens. Free softwares

Aria Maestosa is an open-source (GPL) midi tracker/editor. It lets you compose, edit and play midi files with a few clicks in a user-friendly interface offering keyboard, guitar, drum and controller views.

Sineshine is an audio laboratory completely dedicated to innovations in sound and music. They specialize in cutting-edge sound design as well as in writing tutorial books and developing innovative synthesis/processing algorithms. Their creations can also be found in flagship synthesizers from Roland Corporation. Among others, these include the worldwide-popular sound libraries like "Planet" and "V" series for Roland synthesizers, and Transformer - the innovative synthesis/processing plugin for Mac OS X.