Google has just released a new version of their Gears project which now has support for OS X and Safari.
Google Gears “is an open source project that enables more powerful web applications, by adding new features to your web browser“.
With Gears, web applications can naturally interact with your desktop, JavaScript performance is increased, and you can store data locally in a fully search-able database.
Gears-enabled websites include Google Docs, WordPress an YouTube Video Uploader.
A full run down on new features can be found in the Google Gears Blog, and you can download a copy of Google Gears from http://gears.google.com/.