The 24 year old software that is still going strong

To be honest with you, I really cannot think of many pieces of software that could still be thought of as usable some 24 years after the first version hit the desktop. Even MS Windows can only claim a 22 year history, with Windows 1.0 hitting the streets in 1985. Yet November 30th 2007 was, indeed, the official 24th birthday of BrainStorm.