Hydra is an ecosystem of components that lets institutions deploy robust and durable digital repositories (the body) supporting multiple “heads”: highly feature-rich digital asset management applications and tailored workflows. Its principal platforms are the Fedora Repository, Blacklight, Solr, and Ruby on Rails.
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.
eSciDoc is as a joint project of the Max Planck Society and FIZ Karlsruhe, funded by the Federal Ministry of Education and Research (BMBF), aimed at building an e-research platform for multi-disciplinary research organizations.