Duplicate Killer for Microsoft Outlook
Duplicate Killer plug-in for Microsoft Outlook is for search and management of duplicates across all or chosen personal or public folders on Microsoft Exchange or search each folder separately. Program automatically processes (eliminates, marks with a flag, moves to a folder, or deletes)... Customize the way of search and recognition of duplicates (by any chosen fields) and save it into the profile that can be processed in one click, available from the Outlook toolbar. ... Use the "Only duplicates" folder filter.
http://dl.filekicker.com/send/file...00-4XG3/duplicatekiller_setup.exe - 4Mb - Download - Screenshot

Duplicates Remover for Outlook
Duplicates Remover for Outlook is a powerful and flexible tool intended for the search and processing of duplicates in Microsoft Outlook folders. DRO process contacts, notes, tasks, journal and calendar items and appropriate type Microsoft Outlook folders. ... Duplicates Remover for Outlook is fully compatible with Microsoft Exchange Server and may be used to process public folders on the server. ... The priority system in the add-in is used when you search duplicates across several folders. ... So, you can easily test the add-in and preview the duplicates to delete.
http://www.mapilab.com/files/remove_duplicates.zip - 2Mb - Download - Screenshot

LBE Email Deduplicator or MS Outlook
Automatically delete duplicate emails. Move them to your Deleted folder or another of your choice. Prefix duplicates with a phrase of your choice. Specify what criteria need to consider emails as duplicates.
http://www.lbetoolbox.com/download/lbeemaildedupe.zip - 2Mb - Download - Screenshot

OE Duplicate Remover
If you use Outlook Express for your personal or business mail you will, no doubt, have encountered duplicate email messages. The "Outlook Express Duplicate Message Remover" will automatically find and remove duplicate messages. The OEDMR will (a) find duplicate messages in any folder or group of...
http://ajsystems.com/files/oedmr-setup.exe - 2Mb - Download - Screenshot

LBE Contact Deduplicator for MS Outlook
Automatically delete duplicate Contacts from MS Outlook. Move them to your Deleted folder or another of your choice. Prefix duplicates with a phrase of your choice.
http://www.lbetoolbox.com/download/lbecontactdedupe.zip - 2Mb - Download - Screenshot

EZDupeRemover
Too many duplicates in Outlook? Need to compress PST and make Outlook faster? EZDupeRemover will search for duplicates in Outlook data file, offer a convenient overview and one-button removal for all items found! Industry-strength technology allows to process very large file within several... Numerous options will satisfy advanced user, while default settings will get novice started in 4 mouse clicks.
http://www.ezoutlooksync.com/download/EZDupeRemover1.exe - 850Kb - Download - Screenshot

LBE Calendar Deduplicator for MS Outlook
Automatically delete duplicate Calendar items from MS Outlook. Move them to your Deleted folder or another of your choice. Prefix duplicates with a phrase of your choice.
http://www.lbetoolbox.com/download/lbecaldedupe.zip - 2Mb - Download - Screenshot

Duplicate Email Remover
Duplicate E-mail Remover is powerful and flexible tool intended for the search and processing of duplicated mail messages in Microsoft Outlook folders. DER processes both email messages and posts in mail-type Microsoft Outlook folders. You can use Duplicate E-mail Remover to find mail message... A priority system in the add-in is used when you search for duplicates across several folders. ... Also, if you have permission to connect to mailboxes of other users, you can process mailboxes of other users as well as your own mailbox.
http://www.mapilab.com/files/duplicate_remover.zip - 2Mb - Download - Screenshot

Outlook Tools
Outlook Tools provides highly efficient functions for Outlook. In particular, if you synchronize Outlook with a mobile phone or PDA, you will love these functions. You can clear duplicates, change the telephone numbers into the international format, Find and Replace and change the message classes. ... It is possible to search for the duplicates in all folders. ... The old 01 Swiss dialling code can be changed into the new 044 dialling code during this process and the fax numbers can be hidden in the address book.
http://www.schultz-it.de/Download/OutlookTools.msi - 4Mb - Download - Screenshot

Email Address Collector
Email Address Collector is an email extractor for Microsoft Outlook, Outlook Express, Win/MSN Messenger, Windows Address Book, Outlook Contacts, DOC, PDF, mail EML files or for other local files. Using the advanced filtering system, Email Address Collector? ... It can scan and collect e-mail addresses from the email folders of MS-Outlook, Outlook Express, Microsoft DBX files, MSN/Win Messenger, Windows Address Book, Outlook Contacts folder, web pages, PDF, DOC or other documents, files or entire folders; backup, move and restore MS-Outlook or Outlook Express folders; backup and restore...
http://www.emailaddressmanager.com/eac_setup4.exe - 5Mb - Download - Screenshot