Sessions at RailsConf 2012 about Keynote on Monday 23rd April

David Heinemeier Hansson is a partner at 37signals, a privately-held Chicago-based company committed to building the best web-based tools possible with the least number of features necessary.

37signals' products include Basecamp, Highrise, Backpack, Campfire, Ta-da List, and Writeboard. 37signals' products do less than the competition -- intentionally.

He is also the creator of Ruby on Rails.

Rich Hickey, the author of Clojure and designer of Datomic, is a software developer with over 20 years of experience in various domains. Rich has worked on scheduling systems, broadcast automation, audio analysis and fingerprinting, database design, yield management, exit poll systems, and machine listening, in a variety of languages.