Votenoir is a project mainly written in JAVASCRIPT and CLOJURE, it's free.
Demo voting system using clojure and noir on app engine
;; Start REPL, then run:
(require '[appengine-magic.core :as ae])
(require '[votenoir.app_servlet :as app])
(ae/serve app/votenoir-app)
;; To stop / start
(ae/stop)
(ae/serve app/votenoir-app)lein appengine-prepare
~/bin/appengine-java-sdk-1.5.3/bin/appcfg.sh update war