I am currently trialing the web browser Flock. First impressions are good. Here is some blurb on it…
Open Source Social Media Browser
If you are a social media hound you probably have Flock, a web browser full of extensions and other tools for interacting on the web. Flock is an open source web browser built on the same Mozilla architecture that Firefox is built on so many of Flock’s features should be familiar, like tab-based browsing and the ability to add extensions. However, there are a number of cool new features that appeal to the social networking crowd.
http://www.flock.com