Xobni - is an organizer for Microsoft Outlook email. The beta is now available to the public. I have been using Xobni for 6 months and love it. Xobni is inbox spelled backwards. Xobni compiles a summary for each email sender, extracts phone numbers, photos, organizes attachments in several different ways, and ranks each sender by how many emails they send to you, and how many you send to them. People connected to the email sender are listed, along with email threads from each of them. See all the attachments associated with these people. Search is an integral part of Xobni and can be done in several different ways.
Robert Scoble has a great video interview with Xobni founders Matt Brezina and Adam Smith. I knew the instant I first saw Xobni at the TechCrunch40 Conference that we should be partners. I talked to Adam Smith immediately after his presentation, and had dinner with Adam and his partner Matt Brezina that night. We sketched out how Microsoft could help Xobni, and started executing on the plan the very next day.
Xobni is now a Microsoft Startup Accelerator Program partner. There are lots of benefits to the program like free software, consulting help, press releases, introductions to Microsoft people, partners, and even VCs. But this is one benefit that we didn't anticipate...a demo by Bill Gates at the Microsoft Office Developers Conference. Check out this 2 minute video of Bill talking about Xobni.
Try out Xobni and let me know what you think. What additional features would you like to see? What other email productivity tools do you use?