I recently downloaded and installed a cool new plug-in for Microsoft Outlook called Xobni (inbox spelled backwards). It’s a collapsible sidebar that instantly provides lots of helpful data.
There are two main features:
Search: Find contacts, emails (organized by conversations!), related people, and shared files in an instant—all organized nicely in a sleek sidebar. Since Outlook 2007 has a built-in search for email messages, I wasn’t sure how helpful this aspect of Xobni would be. However, the ability to see not only emails but also contact info (which is even extracted from email messages!), file attachments, and related contacts makes it very handy.