Open Source Document Management - Integrated Library Systems (ILS) Software
Found 3 self-hosted alternatives in this category.
Evergreen
Highly-scalable software for libraries that helps library patrons find library materials, and helps libraries manage, catalog, and circulate those materials
Koha
Enterprise-class ILS with modules for acquisitions, circulation, cataloging, label printing, offline circulation for when Internet access is not available, and much more. ([Demo](https://koha-community.org/demo/), [Source Code](https://github.com/Koha-Community/Koha))
RERO ILS
Large-scale ILS that can be run as a service with consortial features, intended primarily for library networks. Includes most standard modules (circulation, acquisitions, cataloging,...) and a web-based public and professional interface. ([Demo](https://ils.test.rero.ch/), [Source Code](https://github.com/rero/rero-ils))