Doubles tracks down duplicates files (by both contents or filename) and allow you to quickly delete....
It helps you backup/recover/transfer your whole iTunes library and media files.
JRTwine Software, LLC.
Delete FXP Files is an application to delete stubborn directories and filenames.
It can delete some or all your browsing history tracks.
AmpliFIND Music Services
MyDJ iTunes plug-in scans and analyzes your music library.
Qloud Plugin for iTunes is a very powerful plugin for iTunes.
It allows you to easily publish what you are listening to.
Listen to music with iTunes and generate a music profile that you can share.
Lyrics Plugin for iTunes is an add-on to view lyrics in Tunes.
It helps you recover data from your iTunes backup file.
Double File Finder will make sure that your files are not duplicated.
The Now Playing plugin monitors the song you are listening to.
Easily find lost audio and video files on your computer and add them to iTunes.
Lyrics Plugin is a piece of software tailored for music fans.
This program is a nice Outlook utility created by ITSTH.
iTunes sidebar for iTunes is a nifty application for iTunes.
Tenorshare Co., Ltd.
iTunes repair tool to fix all iTunes syncing problems and iTunes errors free.
AC: Dual Client Utility doubles up your entretainment in Asheron's Call.
Topspin Systems Ltd
Double Happy is a social Tennis Doubles event organizer.
Hydrogen Drumkits for LMMS doubles or triples the library of drum samples.
Delete Duplicates - Delete Duplicates, Delete Music Duplicates right Now!
It contains DirectShow plugin, MPEG-2 plugin, WMV plugin, AC-3 Plugin, etc.
iTunes Art Importer is still another feature-adding application for iTunes.
Binary Fortress Software
iTunes Sync is a great application for anyone who loves iTunes but not iPods.