Gears is an open source project that enables more powerful web applications, by adding new features to your web browser.

Features:
· Let web applications interact naturally with your desktop 
· Store data locally in a fully-searchable database 
· Run JavaScript in the background to improve performance

System requirements:
· Windows XP/Vista
· Firefox 1.5+ and Internet Explorer 6.0+

Download: Google Gears 0.5.36.0 (556 KB) | Homepage