This document discusses Koha, an open source integrated library system (ILS), as a potentially more affordable alternative to proprietary ILSs. It notes that while Koha is free to implement, libraries still face costs for maintenance, support, migration, and new servers. Koha is best suited for smaller libraries willing to provide their own support. The document outlines Koha's features and modules. It also discusses leaders and adopters in the open source ILS movement and how this paradigm shift can drive innovation among proprietary vendors.