Roller is the open source blog server that drives Sun Microsystem's blogs.sun.com employee blogging site, IBM DeveloperWorks blogs, thousands of internal blogs at IBM Blog Central, the Javalobby's 10,000 user strong JRoller Java community site, and hundreds of other blogs world-wide.
Roller supports all of the latest-and-greatest weblogging features such as group blogging, RSS and Atom newsfeeds, rich-text editing, customizable page templates, comments, trackbacks, referrers, blogroll management (with OPML) and provides an XML-RPC interface for blogging clients such as Ecto, MarsEdit and w:bloggar.

As an open source solution, Roller has been deployed only in a few instances, but it has been used by thousands of bloggers on a single installation. It features an excellent ability to allow administrators to manage permissions across blogs, but individual blog management is cumbersome, and robust content management workflow tools are lacking. Roller is ideally suited for companies that want to deploy blogs in an enterprise where content management and oversight will be minimal.

Major sites that use the Roller blogging software:

• blogs.sun.com - Sun Microsystems employee weblogs
• JRoller - Free weblogging site hosted by the JavaLobby provides free weblogs to over a thousand webloggers.
• Repubblica.it - Major Italian newspaper uses Roller to provide weblogs for five columnists.
• NewBay - Sells moblogging software based on the Roller.
• Application-Servers.com - French Java and J2EE community provides free weblogs to it's members.
• LFE - Iota Online Network - Lambda Phi Epsilon, Iota Chapter's community website.
• Cheblogs - Free weblogging site run by BrianBlakeley of LabourUnions.com.