David is the creator and lead developer on Rails. He laid the first tracks for Rails working in PHP, but only after running into Ruby did he decide to contemplate a public release. David has used Rails to build "Basecamp":http://www.basecamphq.com -- a web-based project management designed by the experts from "37signals":http://www.37signals.com. Actually, it could just as well be said that he used Basecamp to build Rails. Or that the two built eachother. "More about David":http://www.loudthinking.com/about.html