This document discusses open source software use in local government. It notes that many local authorities are ending agreements with Microsoft and exploring open source alternatives. It identifies potential areas to replace proprietary software, such as desktop applications, operating systems, servers, and data services. It provides examples of commonly used open source software and adoption rates. It argues that open source can provide quality applications at low or no cost, while allowing for customization and faster development. The document advocates adopting open standards and considering both open source and commercial options to balance costs and meet needs.