JSON API(jsonapi.org) serializer that works with rails and can be used to serialize any kind of ruby objects
Create JSON structures via a Builder-style DSL
ActiveModel::Serializers allows you to generate your JSON in an object-oriented and convention-driven manner.
A Ruby framework for rapid API development with great conventions.
General ruby templating with json, bson, xml and msgpack support
Object-oriented representers help you defining nested REST API documents which can then be rendered and parsed using one and the same concept.
A plugin for versioning Rails based RESTful APIs.
Render versioned views automagically based on the clients requested version.