Google Greg Young and Udi Dahan for starters... If you're doing this in Ruby, you can check out Eventide as one option, but i'm not sure if it plays well with R

Google Greg Young and Udi Dahan for starters... If you're doing this in Ruby, you can check out Eventide as one option, but i'm not sure if it plays well with Rails as the team behind it is squarely in the anti-Rails camp.