Seesmic Launches Preview of New Desktop App for Twitter, Facebook

Seesmic has just released a preview version of their Seesmic Desktop Twitter application, Seesmic Desktop 2, the app that runs on Silverlight on both Mac and Windows PC. The most notable thing about this release is the built in support for Seesmic’s new plugin architecture. With the new platform, every tool, feature and service can be integrated into the app as a plugin, which allows for complete user customization of the app.

By default, the app supports multiple Twitter accounts and Facebook, plus it offers support for lesser known services like Google Buzz and Socialwok. You can add in even more plugins, too, like Bit.ly and Bing Maps, for example.

Also new to this version of Seesmic are unique backgrounds provided by Red Bull (and more will arrive later, we’re told). Directory and channels like those supported in Seesmic Look are now available too.

You can download the preview version of Seesmic Desktop here.