Xfire (pronounced "X-Fire") is a proprietary freeware instant messaging service for gamers, that also serves as a game server browser and has various other features. It is currently available for Microsoft Windows. Xfire was originally developed by Ultimate Arena based in Menlo Park, California. Xfire currently has over 21 million registered users, with frequently over 250,000 users online.
Xfire's Livestream (formerly known as Mogulus) allows users to broadcast live video streams of their current game to an audience. The website's Top 10 games has viewed World of Warcraft at the 1st place for many years but was recently surpassed by League of Legends on June 20, 2011. On May 16, 2012 Diablo III took the 1st place. A few days later League of Legends was back at the 1st place.
Read more about Xfire: History, Features, Support, Xfire Events, Third-party Modifications and Software Forking