Make A TestTone 
Free Macintosh test tone Generator
http://www.audioease.com/Pages/Free/MATTMain.htmlPlayerPRO 
Tracker, composer, and player, all in one.
http://www.quadmation.com/pphome.htm
Audiocorder 
VOX program audio recorder. Can set volume sound must reach to begin recording and volume at which it should stop.
http://www.blackcatsystems.com/software/audiocorder.html
Rocket Science 
Bundle of real-time plugins for Mark of the Unicorn's Digital Performer and Audio Desk.
http://www.audioease.com/Pages/RocketScience/RocketMain.html
Autoscore 
Audio-to-MIDI music program that allows you to compose by simply singing or playing an instrument.
http://www.wildcat.com/
iStream 
MP3 Streaming Server for the Macintosh from Arctic Software.
http://www.arcticsw.com/istream/
3ivx.com 
A natural video compression system that is compliant with MPEG-4v3.
http://www.3ivx.com/
RhapsOGL visual effects 
RhapsOGLApp X visual effects generator for MacOSX - This is a visual plug-in for SoundJam MP and MACAST
http://webrhapso.free.fr/rhapsogl/plug.shtml
thOnk_0+2 
Freeware application uses Granular Synthesis to produce very diverse sounds based on a user provided sound file.
http://www.audioease.com/Pages/Free/FreeMain.html
QDesign 
Audio compression solutions for digital music, new media, and Internet streaming.
http://www.qdesign.com/
fLOW Ambient Sound 
Generates a changing soundscape in realtime suggestive of timbres of water, fire, earth, and air. Freeware for Mac G3.
http://www.essl.at/works/flow/download.html
Syd - Software Synthesizer 
A software synthesizer for Mac and Windows. Similar to CSound in capabilities, but easier to use.
http://www.jbum.com/syd/
Lime 
Music Notation software for Macintosh. Also available for Win32. (CERL Sound Group)
http://www.cerlsoundgroup.org/cgi-bin/Lime/Mac.html
Lexikon Sonate 
Generates piano music in realtime, can also be used as a meta-instrument for improvising complex piano music.
http://www.essl.at/works/Lexikon-Sonate.html
Macintosh Music Software Site 
Many freeware and shareware applications available for download.
http://www.hitsquad.com/smm/mac/
Apple - iTunes 
Audio player with multiple playlist functions, native burn support, visual effects, and file conversion.
http://www.apple.com/itunes/
Barbabatch 
Institutes a Quicktime 4.0 codec that converts MP3 files. Demo download available.
http://www.audioease.com/Pages/Barbabatch/BarbaMain.html
Virtual Composer 
Shareware multiple track graphical sequencer, allowing files to be exported in AIFF, abc, or MIDI formats.
http://users.forthnet.gr/ath/jgal/programming/composer.html
Soundminer 
Audio file management system for Digital Audio workstation networks having a Mac attached.
http://www.soundminer.com/
MetroGnome 
Freeware metronome for OS X. Customizable settings.
http://www.braxtech.com/metrognome/
Girl Audio Loop Mixing Software 
MIDI-enabled audio loop mixing instrument.
http://girl.yowstar.com/
Intuem 
MIDI music authoring solution for OS X with Aqua interface, music notation, intended mostly for musical amateurs.
http://www.intuem.com/
Music Ace 
Two education programs covering music concepts.
http://www.harmonicvision.com/products.htm
SoundHack 
Shareware sound processing program does various conversions including sample rate, changes file headers, plays headerless files.
http://www.soundhack.com/
Audion 
Audio player for MP3 files, CDs, and streaming audio from the Internet. Skins/faces available.
http://www.panic.com/audion/
Roxio's Jam Software 
Sound editing software for Macintosh allowing users to easily create 100% Red Book compliant audio CDs.
http://www.roxio.com/en/products/toastwithjam/index.jhtml
CMN Common Music Notation 
Free western music notation package written in Common Lisp.
http://www-ccrma.stanford.edu/software/cmn/
USB-Audio.com 
USB Audio software for Macintosh.
http://www.usb-audio.com/
Cacophony 
Digital audio editor for OS X. Supports many different file formats and multi-track editing.
http://www.bannister.org/software/cacophony.htm
BIAS Inc. 
Peak Studio for editing, processing, and mastering. Deck, a DAW. Vbox for multi-effects. Freq, a 4-Band EQ.
http://www.bias-inc.com/
U and I Software 
Developers of MetaSynth, a composition and sound design program using a strictly visual interface, with customizable tunings and image synthesis.
http://www.uisoftware.com/PAGES/acceuil_meta.html
Red Barn Goat Farm 
Li'l Miss' Scale Oven (LMSO), an ethnic and microtonal scale editor/synth retuner. Also DSP holophonics plug-ins.
http://www.nonoctave.com/
Felt Tip's Sound Studio 
Shareware digital audio editing and recording application.
http://felttip.com/products/soundstudio/
MacMusic 
Resources, searchable links, downloads, updates, classified ads, mailing-list, and articles about making music with your Macintosh.
http://www.macmusic.org/
DSP-Quattro 
Professional sound editor.
http://www.i3net.it/Products/dspQuattro/Asp/Index_EN.asp
Emagic 
Featuring the Logic series, several virtual instruments and hardware accessories. Products description, support area, company information and news.
http://www.emagic.de/
Audiomac 
Reviews of hard disk recording and digital audio post-production software.
http://www.euro.net/ecompany/
Ask the DJ 
MP3 player and DJ/mix engine with beats analysis.
http://www.wildbits.com/askthedj/
Sagan Technology Metro 
Sequencer with MIDI, audio, and video functionalities. Includes support for CoreAudio, CoreMIDI, Audio Units, Music Devices, Music Effects, VST, and Premiere.
http://www.sagantech.biz/
Ovolab 
Develops applications for Mac OS X, particularly software that converts MP3 songs to AAC format. Includes support and downloads.
http://www.ovolab.com
Cosmetic 
Rhythm sequencer, sampler, synthesizer.
http://cosmetic.yowstar.com/
MacWaveMaker Users Group 
MacWaveMaker is a nubus card midi synthesizer for Macintosh. Claims every MacWaveMaker thing may be found here.
http://members.tripod.com/~proclus/mw.html
FingaMIDI 
Replacement open-source driver that allows a PowerBook or iBook trackpad to be used as a 3-axis MIDI control surface.
http://fingamidi.sourceforge.net/
Apple - GarageBand 
Perform, record and create music from virtual instruments and pre-recorded loops.
http://www.apple.com/ilife/garageband/
Jasmine Audio 
Stereo multi-track audio editor and converter supporting AAC/MP4, AVI, System 7, AIFF, WAV, Quicktime, and other formats.
http://www.jasmineaudio.com
The GarageDoor 
Tips and suggestions for Apple's GarageBand. Covers live and MIDI recordings, effects, mixing, mastering and links to free loops.
http://www.thegaragedoor.com/
Apple Quicktime 
Apple's free media player supporting innumerable audio and video formats. The pro version includes an abundance of media authoring capabilities.
http://www.apple.com/quicktime/
SimpleChord 
Handy reference to chords for musicians. For Mac OS X.
http://www.wonderwarp.com/simplechord/
FXpansion 
Creators of BFD drum library module, DR-008 drum sampler, as well as VST to RTAS, VST to Rewire, and VST to AU plug-in adaptors.
http://fxpansion.com
Granted Software 
Developers of the AudioUnit host Rax, AudioUnit Manager, and ReVision, a tool to sunchsonize audio from Propellerhead Software's Reason or Ableton's Live with QuickTime movies. All are exclusively Mac OS X applications.
http://www.grantedsw.com/
iDrum 
Drum machine for OS X, running as both a standalone application and as plug-in. Overview, screenshots, features, downloadable demo and purchasing information.
http://glaresoft.com/products/idrum/index.html
Bitcartel Software 
Developers of iRecordMusic and RadioLover, utilities to record audio streams to AAC and MP3.
http://www.bitcartel.com/
TunesTracker 
Search the iTunes Music Store daily for your favorite artists and send you an e-mail when there are new songs by those artists.
http://www.tunestracker.com
Spectrasonics Virtual Instruments 
Creators of Atmosphere, Stylus, and Trilogy virtual instruments/plug-ins, each with vast core libraries.
http://www.spectrasonics.net
iPod Free File Sync 
Utility for Mac OS 9 which allows synchronization of music from different iPods or any other source to computer.
http://www.crispsofties.com/ipodfreefilesync/
Talking Panda - iLingo 
Language translator for iPod.
http://talkingpanda.com/
YamIpod - Yet Another iPod Manager 
Freeware application enabling adding and deleting music from the device. Includes software news, development information, and downloads.
http://www.yamipod.com/
Max Magic Microtuner 
Microtonal scale editor.
http://groups.yahoo.com/group/16tone
Apple - Soundtrack Pro 
Audio sequencer designed for video, DVD, and web projects. Includes instrument loops and sound effects.
http://www.apple.com/finalcutstudio/soundtrackpro/
Demystifying the iTunes EQ 
Article giving advice about using the EQ setting in iTunes to its full potential.
http://www.methodshop.com/mp3/articles/ituneseq/
How Much Does iTunes Like My Five-Star Songs? 
Article explores the algorithm iTunes uses to pick what comes next in a Party Shuffle playlist.
http://www.omninerd.com/2005/08/25/articles/34
OS X Audio 
Forum provinding information for OS X users.
http://www.bigbluelounge.com/
djay! 
Real-time audio mixing over Bonjour networks, with support for .mp3, .aif, .wav, .aac, and .caf file formats.
http://algoriddim.net/
SoundConverter 
Batch audio converter supporting innumerable sample-based and note-based file formats
http://www.dekorte.com/projects/shareware/SoundConverter/
Extended iTunes Rating 
Analysis of how iTunes deals with ratings of a finer gradient than just the number of stars.
http://www.omninerd.com/2006/02/10/articles/47
MRAC Publishing - Symbolic Composer 
Programming language/expert system for MIDI music composition, including the VLISP Lisp Visualization System.
http://mracpublishing.eu/
Sound Grinder 
Batch audio conversion application with support for a variety of formats, along with the retention of metadata for .mp3, Ogg Vorbis, FLAC, and Quicktime files.
http://www.monkey-tools.com/soundgrinder/
GregEdit 
Software for editing and listening to Gregorian Chant.
http://gregorian.soft.free.fr/
Microsoft Media Player 7.1 
Support among others Microsoft MPEG-4 (version 2.0 and 3.0)and the ISO MPEG-4 video (version 1.0) video codecs.
http://www.microsoft.com/windows/windowsmedia/player/mac/mp71/