fedora commons

Fedora (or Flexible Extensible Digital Object Repository Architecture) is a modular architecture built on the principle that interoperability and extensibility is best achieved by the integration of data, interfaces, and mechanisms (i.e., executable programs) as clearly defined modules. Fedora is a digital asset management (DAM) architecture, upon which many types of digital library, institutional repositories, digital archives, and digital libraries systems might be built. Fedora is the underlying architecture for a digital repository, and is not a complete management, indexing, discovery, and delivery application. The Fedora software is available under the terms of the Apache License. (Excerpt from Wikipedia article: Fedora Commons)