Zembly lets you create social apps for Facebook and more
It's a new breed of software as a service, allowing users to manipulate existing content on social networking sites.
It's also interesting in that the company makes use of a wide array of open APIs and developed their own to create a networked effect of usage.
In a bit of a twist, Zembly runs on Solaris and Sun hardware at Network.com. Maybe act together after all?