outrun - 8:25 am on May 31, 2007 (gmt 0) The API is available here
One of the most frequently requested features for Google's web applications is the ability to use them offline. Unfortunately, today's web browsers lack some fundamental building blocks necessary to make offline web applications a reality. In other words, we found we needed to add a few new gears to the web machinery before we could get our apps to run offline. Gears is a browser extension that we hope -- with time and plenty of input and collaboration from outside of Google -- can make not just our applications but everyone's applications work offline.
The API is available here