http://www.thoughtworks.com/radar#platforms
http://thoughtworks.fileburst.com/assets/technology-radar-may-2013.pdf
«
PostgreSQL is expanding to become the NoSQL choice of
SQL databases. Version 9.2 includes the ability to store JSON
data with full querying capabilities on the content of the JSON
document. Other extensions let the user store and query data
in the form of key/value pairs. This lets you take advantage
of the underlying storage and transactional capabilities of a
28 time-tested database without being tied to a relational
data model. This is ideal for those who want both SQL and NoSQL
applications but prefer a single reliable infrastructure that they
already know how to support
»