Koha

Enterprise-class ILS with modules for acquisitions, circulation, cataloging, label printing, offline circulation for when Internet access is not available, and much more.

GPL-3.0 Perl Document Management - Integrated Library Systems (ILS)
Source code
Demo

Other self-hosted document management - integrated library systems (ils)

Highly-scalable software for libraries that helps library patrons find library materials, and helps libraries manage, catalog, and circulate those materials.
GPL-2.0
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.
AGPL-3.0 Docker

Run it with Docker

Spin up Koha on a VPS in minutes. Use the docker-compose generator to get a starter snippet, or grab a server below.

Generate compose file Browse Document Management - Integrated Library Systems (ILS)