Inspired by the decision of the government of Munich to migrate to open source software, Scott Morris has compiled an impressive list of migrations to open source from around the world. You should take a look at his entire list (almost 100 examples) but some of the highlights, relevant to us, include the governments of Brazil, Venezuela, Mexico, Peru, Japan, Norway, Israel, China, Spain, Australia, South Korea, Indonesia, France, Austria and a bunch more. He also lists some major corporations including the Royal Bank of Scotland, the biggest bank in China, Amazon, the US Postal Service, Telstra, DoCoMo, Travelocity, Tommy Hilfiger, NASA and a lot more of these, too. The open source momentum just keeps on going.