I used to be a big fan of http-kit, but it seems like it's not maintained anymore. I've since moved on to Immutant 2, which seems to offer much more. The primary difference between Immutant 2 over 1 is that it's not monolithic and you can just import what you need. And I believe it's faster too.

Also, yesterday I announced that I am writing a book on developing REST API's in Clojure, if anybody's interested in learning: http://christopherdbui.com/announcing-practical-rest-apis-in...