ils

Koha is the world's first free and open-source integrated library system (ILS). It provides enterprise-class features including acquisitions, circulation, cataloging, label printing, offline circulation, and comprehensive patron management for libraries of all sizes.

Evergreen is a highly-scalable integrated library system (ILS) software that helps library patrons find library materials and helps libraries manage, catalog, and circulate those materials. Designed for consortial use and large library systems.

RERO ILS is a large-scale integrated library system that can be run as a service with consortial features, intended primarily for library networks. It includes most standard modules (circulation, acquisitions, cataloging) and provides both web-based public and professional interfaces.