Sententia is a project mainly written in ..., it's free.
Experiment to provide simple way to have online realtime feedback/surveys/option gathering
sententia helps you perform polls/surveys even in (near) real time to quickly find out the options of a crowd, be it a mentometer in an auditorium or an intranet poll. Based on an API to enable other your own applications to access simple web interface
This is work in progress to at least initially experiment with concurrency technologies on web and backend.
Make sure you have environment setup, follow tips in http://devcenter.heroku.com/articles/scala