Mozilla Flock

Version: 1.2.6 Web browser.

It is specialized in providing social networking and other Web 2.0 features built into its interface. The browser is built on Mozilla’s Firefox codebase. The Flock browser is available as a free download, and supports Microsoft Windows, Mac OS X, and Linux platforms. Flock integrates social networking and media services including Facebook, YouTube, Twitter, Flickr, Blogger, Gmail, Yahoo Mail, etc.

When logging into any of the supported social services, Flock automatically activates these services within its features:

Flock can indicate when friends have updated their profile, uploaded photos or other things.
Flock has internal features that allow sharing of text, links, photos and videos.
Flock has its own system allowing preview of online videos and photos, and subscription to video feeds.
Flock's Feed Reader organizes Atom and RSS feeds.
Flock's Blog Editor allows direct posting into a designated blog, along with being a blog reader.
Flock also allows for third-party add-ons, including a number of Firefox extensions.