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Institution NameProduct/Service Name (please link to the live site)Brief Description
(what is it used for and by whom?)
Main Features
(any customized features or additions to base gems)
Samvera solutions/gems (Please list the gem names like Hyku, Hyrax, Avalon, Sufia, older gems) Storage Layer (Please list the storage like Fedora 3.2, Fedora 4.3 etc)
New York City Municipal ArchivesNew York City Department of Records and Information Services (DORIS) Digital PlatformDORIS Digital Platform houses collections from the New York City Municipal Archives.  The platform expands access to all collections to a diverse range of users.

Hyku pilot project

Archivematica integration

The University of North Carolina at Chapel Hill, University LibrariesService: Carolina Digital Repository (CDR)
App: hy-c
Institutional Repository for OA articles, journals, student papers, research data, posters, 3d objects, OER and more. 

People objects

Admin set/work type matching

12 worktypes

Blacklight OAI provider

Custom workflows


Custom permissions for metadata display

Custom permissions for Repo Admin

EDTF dates


Northwestern University 

Digital Collections


Digital Collections contains thousands of items from Northwestern University Libraries. While only a fraction of materials from the Libraries' collections are represented, the site is representative of the distinction and diversity of collections from the Northwestern Government and Geographic Information collection, Herskovits Library of African Studies, Music Library,McCormick Library of Special Collections, Transportation Library, and University Archives.

DONUT is the Digital Collections Backend and staff DAM.

Digital Collections:  Elastic Search Indexer

DONUT: ARK minting, tiled tif generation.

Digital Collections is a React application hosted on S3. It consumes a metadata API powered by Elastic Search (our "common index"). Images are backed by a "serverless" IIIF endpoint hosted on a lambda.

DONUT: customized Hyrax

Fedora 4.7.4
University of Hong Kong Libraries

DigitalRepository@HKUL (public access)

(back office )

DigitalRepository@HKUL  is a platform for hosting digital contents received into or developed by HKU Libraries to support teaching, learning, research and knowledge exchange. The repository provides digitized materials including books, manuscripts, journals, articles, photographs, videos, audio, music scores, ephemera, posters, drawings and more.

IIIF Manifest generation

OCR with Abbyy

SAML login

Spotlight for public access interface

Hyrax 2.5.1Fedora 4.7.3
Linn-Benton Community CollegeCommunityArchive@LBCCCommunityArchive@LBCC is a tool for showcasing and preserving important content created at Linn-Benton Community College.  Our collection focuses on teaching and learning materials (particularly Open Educational Resources) and institutional history.

University of California Los AngelesUCLA Library Digital CollectionsThe UCLA Digital Library Program (DLP) serves as the catalyst for the creation, management, and delivery of digital content in support of the UCLA Library mission and goals. The Program provides for the storage and dissemination of digital objects, including text, images, audio, and video in their various digital manifestations and combinations. The UCLA Library provides a web presence for digital collections, and provides storage, backup and digital preservation support for all digital content accepted into, or developed by, the Library.

American Theological Library AssociationATLA Digital LibraryThe ATLA Digital Library is designed to provide members and other organizations with a standards compliant, sustainable, and inter-operable hub that will promote visibility and access of their valuable digital collections.
Hyrax 2.3.3
US Department of Agriculture (hosted by Cornell)Economics, Statistics and Market Information System5 USDA Agencies manage usda publications (parent work) and add releases (child works) to publications that contain data files (txt, pdf, csv, xls, xml) for agricultural data. Mostly used by ag-economists, market analysts, researchers, farmers, etc.

Combination of permissions, user roles to allow agency admins to only have write permissions.

Front end customizations: Modified homepage to focus on search and browse.Only display publications (parent work) in search results.Added subscription feature so users can subscribe and get email notifications (via MailGun API).Customized work creation forms to use multi-step forms.


Reveresed parent child relationship.

Used collection extensions for 5 agencies with nested collection for one large agency with 4 divisions.

Store files on S3 with external content link in Fedora, links to file download use CloudFront distribution endpoint to S3

Created a read/write API for creating and migrating content

Hyrax 2.1.0

Fedora 4.5.0

Solr, 7.1.0


UC Santa Barbara

Alexandria Digital Research Library

Source code on GitHub

Digital collections system for unique digitized and born-digital library materials including photographs, prints, newspapers, maps, audio, sheet music, manuscripts, ETDs, and more. Linked data support, controlled vocabularies, pan-and-zoom viewer, , batch ingest via CSV/MARC harvest/MODS, collection landing pages, ARK minting with EZIDCuration ConcernsFedora 4.6.0
Princeton University Library


source code on github

Staff tool for building digital objects, which are served using IIIF, and embedded in our user-facing applications:

Blacklight: Catalog, Latin American Ephemera, and Digital Cicognara Library

GeoBlacklight: Digital Maps & Geospatial Data

Spotlight: Digital PUL

Content types: books/manuscripts, maps/geodata, ephemera, audio, numismatics, controlled vocabs

ARK minting with EZID

BagIt import/export

BrowseEverything ingest

Drag-and-drop page reordering, table-of-contents building


IIIF Manifest generation

MARC & EAD metadata import

OCR with Tesseract

PDF generation with Prawn

RabbitMQ event publishing

Workflows with AASM

valkyrie 2.0

valkyrie-sequel 2.0

browse everything





Metadata: Postgres 10

Files: CIFS-mounted Isilon

University of Hull

Hydra at Hull

Source code on GitHub

Digital repository. Most content accessible to the world at large, some restricted to University users. Mediated deposit workflow.Content largely consists of theses, journal articles and past examination papers (the last restricted to University users only) although many other types of digital content are present in smaller numbers.



Fedora 3.7
University of Michigan

Deep Blue Data

Source code on GitHub

Research data repository for University of Michigan researchers. Deposit is mediated and access is open to all.Tombstone, DOI, Download all files, and Globus DownloadHyraxFedora 4.7.4
University of Michigan


Source code on GitHub

Fulcrum is an open source publishing platform that helps publishers present the full richness of their authors' research outputs in a durable, discoverable, accessible and flexible form.Web-based EPUB reader. Works segmented by Publisher with customized branding and publisher specific analytics. Mediated access of subscription materials. Bulk importer. Support for embedded multimedia FileSets in EPUBS. AblePlayer integration for audio/video, Leaflet IIIF for images. Jekyll static site integration. COUNTER P5 analytics tracking and report generation.HyraxFedora 4.7.4
Northwestern UniversityARCHInstitutional Repository research output including dissertations, data sets, and published articles.DOI, download all files, AWS hostedHyrax

Fedora 4.7.4

Northwestern UniversityAVRAvalon-based media system for special collections and course reservesAWS hosted, Canvas integrationAvalonFedora 4.7.4
Oregon State University


Source code on GitHub

Institutional repository for scholarly content including graduate theses and dissertations, articles, presentations, technical reports, and research datasets. Migrated from DSpaceNested and ordered metadata fields;HyraxFedora 4.7.3

Oregon State University

University of Oregon

Oregon Digital

Source code on GitHub

Collaborative digital collections system for unique digitized and born-digital materials including photographs, articles, sheet music, manuscripts, ephemera, and more. Migrated from CONTENTdmLinked data support, controlled vocabularies, pan-and-zoom viewer, BookReader viewer, bulk ingest from Bags, Collections/Sets landing pages, CONTENTdm URL redirects, OAIHydra 6Fedora 3
University of UtahThe HiveInstitutional research data repository.
Hyrax 2.5.1Fedora 4.7.5
University of Virginia


source code on GitHub


Libra: Institutional Repository research output including dissertations and open scholarship, primarily self-deposit (unmediated workflow)

Blacklight: Virgo catalog, Geo-blacklight

Content types: theses/dissertations, articles, books/manuscripts, presentations, reports, images, audio, video, supplemental files

DOI minting via DataCite

ORCID registration through external service

Libra: Sufia 7.3

Virgo: Migrating to Blacklight 7

Fedora 4.7.3

King's Fund

(hosted by CoSector, University of London)

King's Fund Digital ArchiveDigitized publications from the King's Fund from 1898 onwards.

Uses Hyku, plus:

Work types: Published Work, Conference Item (via dog_biscuits)

Front-page carousel

IIIF search

Data imported from EPrints (via importer in leaf_addons gem)

Hyku 1.1

Hyrax 2




Fedora 4.7.4
Indiana UniversityImagoRepository for biological research collections. The bulk of the current content is over 150,000 pressed plant specimen images from the Indiana University Herbarium.

Custom ingest routines and integration with digitizing workflow.

Use of persistent URL's to integrate digital content with external systems.

Sufia 7Fedora 4.7.0
Indiana UniversityMedia Collections OnlineCentral service for AV media collection at Indiana University. Contains media from a large variety of departments and schools at IU, the IU Libraries, and external partners.

Locally hosted

Canvas Integration

AvalonFedora 4.7.5
Indiana University

Pages Online

Page turning application for uploading, describing, structuring, and providing access to digitized multi-page items from the IU Libraries collections. Based on Princeton University's Plum

IIIF integration with Universal Viewer

HOCR derived using Tesseract with "Search Within" available in the Universal Viewer (select items)

Structural editor to provide hierarchy and labeling within an item

Curation Concerns (moving to Hyrax currently)Fedora 4.7.0
Duke University

Duke Digital Repository

Source code on GitHub:

Digital repository for digitized and born-digital special collections; library purchased and licensed collections (including some ebooks); select University Archives materials

IIP Image Server + IIIF Image API, custom OpenSeadragon viewer

A/V customizations around streaming, external embedding, Closed Captions, interactive transcripts and clickcable timecodes

Custom URLs, per-collection Blacklight & portal configurations

Batch import and metadata updating

Role-based permissions

Integrated ARK minting

PTIF derivative generation

Structural metadata generation & file tree browser for nested folders/files

...and more!

HydraHead 7.2.2

ActiveFedora 7.3.1

Fedora 3.8.0
Duke University

Duke Digital Repository – Research Data

Source code on GitHub

Institutional repository for research data

Integration with for file submission

Batch metadata imports via CSV

Versioning for works (datasets)

Vertical breadcrumbs for nested works

Browsing “top-level” works only

Data submission form conditionally presenting a series of questions

ARK and DOI minting with EZID and Crossref services

HyraxFedora 4.7.5
Emory University

Emory Electronic Theses and Dissertations (ETD)

GitHub: Laevigata

Mediated self-deposit repository for theses and dissertations, used by multiple Emory University Schools and departments

Mediated deposit workflows including single and multiple approvals

Primary/supplemental file delineation

File-level descriptive metadata

Box integration

Shibboleth integration

Save self-deposit submission as draft

Customized embargo durations

Customized embargo levels (full work, files, abstract, table of contents)

Submit works to Proquest

HyraxFedora 4.x
Digital Repository of Ireland

Digital Repository of Ireland

Source code on GitHub

The Digital Repository of Ireland is a national digital repository for Ireland’s humanities, social sciences, and cultural heritage data.

Support for multiple metadata standards: DC, MODS, MARC, EAD

Batch import

DOI minting with Datacite

IIIF manifest generation and OpenSeadragon

RDF output

hydra-head 9.10.0

active-fedora 9.13

Fedora 4.7.5



Ceph Rados Gateway

UC San DiegoLibrary Digital Collections

University of AlbertaEducation & Research Archive 

PrincetonDigital Archive of Latin American and Caribbean Ephemera

CornellSoutheast Asia VisionsA collection of more than 350 European travel accounts of pre-modern Southeast Asia 

Tufts UniversityTufts Digital Library 

Virginia TechVTechData A platform for openly publishing datasets or other research products created by Virginia Tech faculty, staff, and students

StanfordHydrus An IR with support for configurable workflows (deposit, review, edit, publish)

Penn StateArchiveSphere A repository for collections of digital archival materials, automating the management of common preservation activities like file characterization and migration, fixity checking, etc., while preserving the relational and hierarchical connections between files.
Penn StateScholarSphere A self- and proxy-deposit repository for access to and preservation of scholarly works and data.
London School of Economics and Political ScienceLSE Digital Library

Notre DameDigital Exhibits A collection building and delivery application for digital library objects

StanfordArgoA repository administrator's dashboard for workflow management and reporting

StanfordEEMs - Everyday Electronic MaterialsA tool and workflow for accessioning born digital materials into a Library's formally managed collection

StanfordETD's - Electronic Theses & DissertationsETD deposit, approval & access

StanfordSALTworksSelf-Archiving Legacy Toolkit 



Source code on GitHub

Self-submission institutional repository



Shibboleth sign-on

Hyrax 2.x



Fedora 4.7.3
MAE, Theater Institute of Barcelona

Australian Department of the EnvironmentClosed resource

Johns Hopkins UniversityLester S Levy Sheet Music Collection

Science History InstituteDigital Collections

Art Institute of Chicago

Digital Commonwealth (Massachusetts Collections Online)

Berlin State Library, GermanyClosed collection of historic documents

École des Hautes Études en Sciences Sociales (EHESS), School of Advanced Studies in the Social Sciences, France

DidómenaInstitutional research data repository. Self-deposit data repository for researchers in humanities and social sciences.Internal prosopographic referential with Idref integration for authority records
Autocomplete for several referentials : Rameau, Glottolog, Geoethno, Thesaurus of online medieval images (TIMEL)...
Optional metadata areas by discipline
Full internationalization of free text fields (RDF Langtag support)
On the fly OCR with tesseract / full text search
Chained authentication protocols with LemonLDAP::NG



Fedora 4.7.5


High-capacity replicated storage with Active Circle