Developer Platform Mashup?

As application platforms like Twitter, Facebook, Google, Microsoft, and others continue to open themselves to developer integration, it will become increasingly difficult for developers to keep track of everything as the applications they build bolt onto multiple services.

http://gigaom.com/2011/06/29/twitter-to-launch-site-for-platform-developers/

Although I applaud Twitter for doing this, someone needs to build a solution that consolidates these developer platforms into a single offering so t...