Islandora is a completely free open-source software framework designed to help institutions and organizations and their audiences collaboratively manage and discover digital assets using a best practice framework. Islandora is implemented and supported by an ever-growing
international community.
Built on a base of Drupal, Fedora, and Solr, Islandora's flexibility empowers users to work with a huge variety of data types (such as image, video, and pdf) and knowledge domains (such as Chemistry and the Digital Humanities) and provides integration with additional viewers, editors, and data processing applications.
Islandora has out-of-the-box support for:
Any Digital File Type
Batch Ingest and Migrations
Faceted Searching
Flexible Metadata
Flexible Storage
IIIF
JSON-LD Serialization
Linked Data
Multilingual Content and Interface
OAI-PMH
Usage Statistics
Additionally, you can extend Islandora using any of the hundreds of modules built by the Drupal community.

