Group@Work Address - It allows you to integrate practically every external data-source.

Group Work Address is a COM-Add-In for Microsoft Outlook 2000 and later that allows you to integrate practically every external data-source (database-systems like Oracle, SQL-Server, MySQL, and Access) into Outlook as e-mail address book. You can use your existing data from any database-based program (e.g. accounting) you have in your Company. Group Work Address is totally embedded in Outlook so that the users can continue working without any difference. Group Work Address is available in three different versions. All versions have exact the same functionality and differ only in the number of different address-books that can be created and the number of records each address-book can display. Beside this you can install Group@Work Address on any number of workstations without additional license-fees.