Its still early days for me, but I'm really enjoying working with Pliny[0], which is a Ruby based framework that came out of Heroku's experience building APIs.

Its still early days for me, but I'm really enjoying working with Pliny[0], which is a Ruby based framework that came out of Heroku's experience building APIs. It makes the very good move of just being an opinionated Sinatra stack, and a set of patterns for things like API representations. [0] https://github.com/interagent/pliny https://github.com/interagent/pliny