David Gelernter is a Yale computer scientist with a vision of how software ought to work. He formed a company called Scopeware to capitalize on those ideas. The big idea is that time is the chief organizer of our lives, and so chronology ought to be the chief organizer of our data. Here’s a piece in Plastic about his New Desktop.
Incidentally, Gelernter is also famous for having been targeted and severly injured by the Unabomber. Here’s a copy of the letter Ted Kaczynski sent him. Creepy.