Google Gears (BETA) is an open source browser extension that enables web applications to provide offline functionality using the following JavaScript APIs:
Store and serve application resources locally
Store data locally in a fully-searchable relational database
Run asynchronous Javascript to improve application responsiveness
Zimbra Desktop is the next generation leap forward for Web 2.0 applications- now you can have Zimbra's Ajax-based collaboration experience online and offline. That means when you are out of the office without a connection (say, in a plane, train, or autom