Find and Remove duplicate tracks in your iTunes Library quickly with Tune Sweeper. Tune Sweeper has a unique design that makes it easy to review and delete the duplicate entries in your iTunes library. Duplicates are displayed in groups. Detailed information is given about each of the tracks in the group to help you decide which track to keep.

Duplicate File Detector is a powerful tool to search for file duplicates on your computer. It can find duplicates of any files: text, binary, music or image. Algorithms used in the program allow for quickly analyzing of content of small and large files. The following criteria can be used search for duplicates: filename, file size, or file content. For multimedia files (MP3, OGG/Vorbis, WMA), the content of the following tags can be also analyzed: "Artist", "Album", "Title" and "Comment".

Professional Tool to Clean Up and Organize iTunes Library - iTunes library is full of duplicated music and music files with missing information? Tenorshare Music Cleanup could automatically find missing information like artist, genre and lyrics for iTunes library and local music files. Besides, it also cleans iTunes library and local music library by removing duplicates.

Delete Duplicate Files is a tool for deleting duplicated files from the hard drives. Comparing large number of files by content is the kind of operation that may require considerable amount of system resources. Use Resources Consumption settings to tweak that usage so it can blend nicely into your current system environment.

Delete Duplicates on Server is powerful tool for deleting duplicated e-mail messages online.

Delete Duplicates for Outlook will enable you to delete duplicate e-mail messages from your Outlook mailboxes. It is a add-in, i.e. an auxiliary program that interfaces with Outlook, can operate in and on the Outlook environment.

Duplicates Detective for Thunderbird is a user-friendly tool designed specifically for the Thunderbird mail client, enabling you to quickly find and remove duplicate emails from your mailfolders. The program allows you to select the preferred Thunderbird profile and by pressing the 'Scan for Duplicates' button, it will analyze the mailfolders and display the results in two panels, one for 'Originals' and one for 'Duplicates'.

Delete Duplicates for Eudora enables you to delete duplicate e-mail messages from your Eudora mailboxes. It is a plug-in, i.e. an auxiliary program that interfaces with Eudora (for many people the e-mail software of choice), can operate in and on the Eudora environment, and provides functions that Eudora itself does not provide.