Importing, transforming, storing and indexing data should be easy.

Catmandu is a command line tool to access and convert data from your digital library, research services or any other open data sets. Catmandu provides a suite of Perl modules to ease the import, storage, retrieval, export and transformation of metadata records. Combine Catmandu modules with web application frameworks such as PSGI/Plack, document stores such as MongoDB and full text indexes such as Solr to create a rapid development environment for digital library services such as institutional repositories and search engines.

In the http://librecat.org/ project it is our goal to provide an open source set of programming components to build up digital libraries services suited to your local needs.

Read an in depth introduction into Catmandu programming at https://github.com/LibreCat/Catmandu/wiki/Introduction.

LibLime's Koha is a web-based, open source integrated library system (ILS) that has also been used for virtual library systems (e.g. recreating historic libraries). LibLime Koha offers libraries circulation policies, patron management modules, parent-child relationship for patron records, club and service management features, in-depth "holds" support, single click batch import "undo" option, EzProxy compatibility, self-checkout interface and more.