Koha is an open source integrated library system first created in 1999. It was developed to support the key functions of acquisitions, serials, cataloging, online catalog, and circulation. Koha continues to evolve with contributions from its growing community of library users. It offers free and paid support options as well as free resources like documentation and live chat. Considering its features, user base, support, and low costs, Koha remains a top choice for integrated library systems especially for public and smaller academic libraries.