The document compares three free/open source integrated library management systems (ILMS): Koha, OpenBiblio, and PhpMyLibrary. It finds that Koha satisfies all functional requirements and scores highest in most modules like acquisition, cataloging, circulation, and serials control. While OpenBiblio and PhpMyLibrary are suitable for smaller libraries, they lack some modules. Free and open source ILMS offer libraries control over their systems without initial commercial software costs, and have all key features of proprietary systems. However, documentation and installation can sometimes be challenges. The author suggests librarians try open source options and get involved in their development.