Android Cloud to Device Messaging (C2DM) was launched recently as part of Android 2.2. C2DM enables third-party developers to push lightweight data messages to the phone. C2DM created a nice opportunity for us to pull together different Google developer tools to create a simple but useful application to enable users to push links and other information from their desktop / laptop to their phone. The result was Chrome to Phone - a 20-percent time project at Google. Chrome to Phone comprises a Chrome Extension, an Android Application, and a Google AppEngine server. All of the code is open sourced and serves as a nice example of how to use C2DM. I really can't wait for the 2.2 update to my phone. Check out the technical brief here