What we used in examples:

Python

• Bottle 0.12-dev http://bottlepy.org/docs/dev/
• PyMongo 2.3 http://api.mongodb.org/python/current/

Ruby

• Sinatra 1.3.3 http://www.sinatrarb.com/
• Mongo 1.7.0 https://github.com/mongodb/mongo-ruby-driver