All the Client Downloaders for all the Blizzard Games that can be digitally purchased. This includes:
Diablo II Lord of Destruction
Warcraft II Reign of Chaos
Warcraft III The Frozen Throne
World of Warcraft (Classic, The Burning Crusade, and Wrath of the Lich King)
Starcraft Analogy (Starcraft and Brood War)
These clients come in Windows, and Mac executables as well.
These clients are the North American (NA) English United States (enUS) versions. This should only affect World of Warcraft and Starcraft II.