"We would love for you to install it and test it and file bug reports so we can polish it and find all the corner cases," said Google's Jeremy Moskovich.
Gears extends a browser so, for example, some Google Docs can be edited or viewed while the user isn't connected to a network. It also can speed up use of the WordPress blogging software and some operations at MySpace, and Google is expanding its scope to geolocation services and other areas, too.
The software requires Safari 3.1.1 on Mac OS X Tiger 10.4.11 or Leopard 10.5.3, he said.
Gears already works on Firefox and Internet Explorer; Opera is working on a version for both its desktop and mobile browsers.
(Via Google Operating System.)