Google Inc. (NASDAQ:GOOG) announced today that they are now letting Google Apps customers add third-party applications to GMail. “Starting today, third party developers can build Gmail contextual gadgets and distribute them in the Google Apps Marketplace. These gadgets can display information from social networks, business services, web applications and other systems, and users can interact with that data right within Gmail,” stated Google Apps extensions Product Manager Chandrashekar Raghavan.
Some examples of GMail third party apps available for Google Apps customers in the Apps Marketplace include AwayFind, Gist, Xobni, and BillFLO. You can find the GMail third party apps here:
[Google Enterprise Blog]