Tastypie: Django REST API framework

Tastypie is an webservice API framework for Django. It provides a convenient, yet powerful and highly customizable, abstraction for creating REST-style interfaces.
http://django-tastypie.readthedocs.org/en/latest/

Django-piston REST API

REST API using django and django-piston.
Piston lets you develop API for your site. From my experience in piston you can write API very fast. Lets have a small drive ...
A sample API code with readme available on github.