DotA is the most attractive and succesfull Modification of Warcraft III.
It was released in 2003 by IceFrog and is one of the leading e-Sports titles actually.
Command and Conquer Ra3
Command and Conquer: Red Alert 3 is a 2008 real-time strategy video game developed by EA Los Angeles and published by Electronic Arts. Announced on
February 14, 2008, it was released on October, 2008 in the United States for Microsoft Windows-based PC´s and three days later in Europe.
Warcraft III: The Frozen Throne is a real-time strategy computer game developed for Microsoft Windows by Blizzard Entertainment. Warcraft III: The Frozen Throne contains four playable races: Humans and Orcs, the Night Elves and Undead.