ActiveFedora- Built on RubyFedora, this ruby gem provides an active record oriented way of working with objects in Fedora
ESciDoc - An eResearch environment developed specifically for use by scientific and scholarly communities.
The Fascinator - A front end to Fedora commons repository that uses Solr to handle all browsing, searching, and security.
Hydra - Will provide a "Lego Set" of web services and templates that can be used for a wide range of content management workflows. (Not released yet but coming soon.)
Islandora - A Drupal module that allows users to view and manage objects stored in Fedora.
RODA - An OAIS-compliant, service-oriented digital repository system designed to preserve government authentic digital objects.