Mac Apps for Audio Plugins
The Audio Plugins & Utilities category contains audio software plug-ins--accessory downloads designed to add or improve the functionality of other software programs, including iTunes, Mozilla Firefox, Winamp--and audio utilities that provide a variety of features, such as controlling volume, splitting or joining audio files, and transferring songs between computers and portable devices.
eXo Visualizer
Free

MiniSpillage
Free
WhiteCap
Free to try
VST Wrapper
Free to try
Hybrid 3
Free to try

ampLion Free
Free
HumbuckerFREE
Free
Dark Side of the Groove - Apple Loops
$60.00
FabFilter Pro-C
Free to try
PolyPhontics GB
Free to try
DrumSpillage
Free to try
Funky Drums from Hell - Apple Loops
Free to try
NorthPole
Free
Corona
Free to try

Voxengo GlissEQ
Free to try
Discovery Pro
Free to try
Pinky Pluggo
Purchase
TechRTA
$11.00

iRooster
$9.95
SoftSkies
Free to try
Voxengo LF Max Punch
Free to try

GrowlTunes
$1.99
Vertigo
Free to try
Light Guitar Audio Unit
Free