Teoma, Mooter, and Dipsie

This engine was mentioned in a recent Tech Review article on what comes after Google. I've just started playing with Teoma and Mooter, Dipsie is not ready for prime time yet. The article goes into more detail, but here is a quick blip on each from their own pages.

• Teoma: Teoma analyzes the Web as it is organically organized—in naturally-occurring communities that are about or related to the same subject—to determine which sites are most relevant. Teoma is the only search technology that can locate communities on the Web within their specific subject areas, as they actually exist.
• Mooter: Mooter... employs unprecedented "artificial algorithms" based on psychological modelling to process and understand the information users seek.
• Dipsie: Our goal is to deliver more relevant results from a more complete index of the Web and enable our users to find what they're looking for within 2 clicks.