circulation

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.