Zumobi is a spin-off from Microsoft Research. Wikipedia says: Zumobi (formerly ZenZui)[1] is a software application that allows users to access a wide variety of content from their mobile phone via a Zooming User Interface. By selecting up to 16 Tiles for the zoom space, a user can access content that is highly personalized and delivered via server synchronization similar to e-mail delivery on the RIM BlackBerry. A Tile is like a Web widget acting as an interactive distributor of content such as traffic, weather, movie times, sports scores, and a variety of data accessed via the web.
Zumobi apparently is a closed system not allowing any 3rd party developer to create “tiles” or widgets for the engine. You can however get in contact with Zumobi asking for cooperation possibilities.