The first web browser was written in Objective-C
Yesterday, while playing an online game (WarBirds), a person wouldn't believe me when I said the first web browser and web server were developed on a NeXT computer. (we were debating the merits of closed vs. open protocols, I'm not sure why I brought up TBL's NeXT box). We were promptly flamed for "talking shop" in the game, and rightly so! :-)
W3C: The History of the World Wide Web. from 1945 to 1995.