JSONiq
►http://jsoniq.org
JSON is a lot simpler than XML in many data-oriented applications, and it is widely used in Web Service APIs and data feeds. But JSON has no full-featured query language, which means it is no longer simple for the most demanding applications.
JSONiq is a query language for JSON, based on XQuery. One profile of JSONiq removes everything directly related to XML, adding JSON constructors and navigation. Another profile includes the full XQuery language, with added JSON support, allowing queries to consume or produce JSON, XML, or HTML.