Samvera main components are Fedora Commons, Solr, Blacklight, and HydraHead (a Ruby on Rails plugin and gem, respectively).

[2][3] The stated goal of the project was to "support the rapid development of multiple systems tailored to distinct needs, but powered by a common underlying repository.

Samvera implements the Opinionated Metadata gem to create domain-specific languages out of complex XML standards such as MODS.

Finally, a librarian user may access yet another Samvera head to curate an online exhibit of research at their University, using the photographs submitted by the faculty member but employing a special curatorial interface.

[13][14] The goal of this project is to extend the Hydra codebase to "build, bundle, and promote a feature-rich, robust, flexible digital repository that is easy to install, configure, and maintain.

Hyku reduces barriers to effective asset management and preservation for collections and content types of many kinds, and is supported by a vibrant and ever-growing open source community.

The project aims to explore, develop, and pilot an open source, multi-tenant, consortial institutional repository (IR).

[19] ScholarWorks[20][21] is "a shared institutional[22] repository that collects, preserves, and provides access to scholarship by research communities[23] at The California State University.