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Open source software is simply software that has its source code available for anyone to download, see, modify and create new programs based on it as long as those new programs also stay open source. In this way, everyone is free to modify it to his own needs and develop it in any fashion he wants. Absolute majority of these programs comes free of charge, but without support from the vendors. The open-source software has recently gained popularity in governmental and commercial sector, especially in some European countries. Apart from the obvious advantage it has over the programs you need to pay for – that it comes free of charge, open-source software has other good sides as well. First of all, it is the availability of applications – for almost any program you can find an open source alternative (or a couple of them). For example, instead of usin