 Open Source software, which is software with «open» source code - the way of software development, in which the source code created programs open, that is open to view and edit. This allows anyone to use existing code for their own needs and perhaps help in the development of an open program.
Free is the right user, but not the obligation producer - «open» license does not require that the software has always provided free of charge. Many of the most successful projects «open» software, however, are free.
The term open source (s Open Source software) was created in conjunction with the definition in 1998, Eric Raymond and Bruce Perensom, who argued that the term free software (free software) is ambiguous and discourages business entrepreneurs.
The vast majority of public programs is a «free» and vice versa, because the definition of an open and free software are close, and the majority of licenses comply with both.
The difference between the movements of open software and free software is mainly in priorities. Supporters of open software focus on the effectiveness of open source as a method of preparation. Supporters of free software based on the ideological considerations, and believe that it is the right to distribute, modify and study programs are the main advantages of free software.
Despite the authors' desire to determine to get rid of ambiguity words «free», the expression «open source» also very often used to refer to entities that are contrary to the definition of OSI, or do not have anything to do with it, but can lead to confusion. For example, the U.S. special services are using it to the value of «open source».
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