Free and open-source tools for cataloging, circulation, acquisitions, and discovery
These systems form the backbone of a library's technical infrastructure, handling everything from cataloging and circulation to patron management and resource discovery - all without expensive commercial software!
| Need | Recommended Tool | Best For |
|---|---|---|
| Complete Library System | Koha | Full-featured ILS with global support |
| Consortium Libraries | Evergreen | Multi-library shared systems |
| Modern Cloud-Native | FOLIO | Next-generation library services platform |
| Small Libraries | OpenBiblio | Simple, lightweight operations |
| Resource Discovery | VuFind, Blacklight | Enhanced patron search experience |
World's First Open-Source ILS
Complete ILS with cataloging (MARC21/UNIMARC), circulation, acquisitions, serials, patron management, and OPAC. Used by thousands of libraries worldwide with active community support.
License: GPL (Open Source)
Consortium-Focused ILS
Highly scalable ILS designed for library consortia. Features robust circulation, acquisitions, cataloging, and a powerful web-based staff client. Ideal for multi-library systems.
License: GPL (Open Source)
Next-Generation Library Services Platform
Modern, cloud-native library services platform with microservices architecture. Offers modular apps for circulation, acquisitions, e-resources, and more. The future of library systems.
License: Apache 2.0 (Open Source)
Simple ILS for Small Libraries
Easy-to-use ILS designed for small libraries and schools. Features basic cataloging, circulation, and OPAC. Perfect for organizations with limited technical resources.
License: GPL (Open Source)
Library Resource Discovery Portal
Flexible discovery system that searches across your catalog, digital collections, and external resources. Features faceted search, user accounts, and extensive customization options.
License: GPL (Open Source)
Ruby-based Discovery Interface
Modern discovery interface built on Ruby on Rails and Solr. Highly customizable with a strong developer community. Used by major research libraries worldwide.
License: Apache 2.0 (Open Source)