Wikipedia
PokerStars is the largest online poker cardroom in the world; it can be accessed through downloadable poker clients for the Windows and Macintosh operating systems.
A PokerStars.com online satellite tournament produced the 2003 World Series of Poker (WSOP) champion, Chris Moneymaker. As the first person to become a world champion by qualifying at an online poker site, Moneymaker's 2003 win was an important factor in catalyzing the poker boom of the mid-2000s. The press has called this the " Moneymaker Effect."
In January 2012, PokerStars introduced a downloadable mobile client for iOS from iTunes. In February 2012, the company also introduced a client for Android.
On July 31, 2012, PokerStars bought its former competitor, Full Tilt Poker. The $731 million deal settled a civil lawsuit with the Department of Justice while giving ownership of Full Tilt Poker's assets to PokerStars.
On June 12, 2014, Amaya Gaming Group agreed to buy PokerStars and its parent company for $4.9 billion in cash. The deal was completed on August 1, 2014.