Haystack - Modular search for Django

Haystack lets you write your search code once and choose the search engine you want it to run on. With a familiar API that should make any Djangonaut feel right at home and an architecture that allows you to swap things in and out as you need to, it's how search ought to be. It plays nicely with third-party app without needing to modify the source and supports Solr, Elasticsearch, Whoosh and Xapian.