Blizzard Entertainment:Storm

"Blizzard games released since 1996 to 2004 (Diablo, Diablo II, Starcraft, Warcraft II and Warcraft III) shipped with Storm.dll, a dynamic library that contained functions that were able to read data from the archives. This DLL also contained memory management functions, network support, compression functions and other. There was also a Mac version of this library, named Storm.bin. Storm.dll only contained functions for reading MPQs. The MPQ writing functions (saving games, creating maps etc.) were compiled inside the main game executable."

— zezula.net