For decades Microsoft has been the defacto choice for organisations when it comes to operating systems and office software.
But in recent years a growing number of city authorities have started to buck the trend, swapping out Windows and Office for open-source alternatives, such as the Ubuntu OS and the LibreOffice suite.
Here are 10 organisations that chose to wave goodbye to Microsoft, and one which decided to come back.
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Nick Heath is chief reporter for TechRepublic. He writes about the technology that IT decision makers need to know about, and the latest happenings in the European tech scene.