This document summarizes Munich's LiMux project, which aims to transition the city's IT systems to free and open source software. Some key points: - Munich has over 33,000 employees across 51 locations and previously spent 134 million euros annually on proprietary IT. - The LiMux project began in 2001 and has involved developing a customized Linux-based client, migrating over 15,000 desktops to OpenOffice, and evaluating options for transitioning 300 business applications. - The transition has faced challenges due to the large number of templates and applications, but has consolidated templates and defined common standards. Most workplaces now use the free Linux client and OpenDocument format.