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Relating to source code that is available to the public without charge. Open-source code is often enhanced, improved, and adapted for specific purposes by interested programmers, with the revised versions of the code are made available to the public. For example, most of the code in the Linux operating system is open-source.
social movement, begun by computer programmers, that rejects secrecy and centralized control of creative work in favour of decentralization, transparency, and unrestricted ("open") sharing of information. Source refers to the human-readable source code of computer programs, as opposed to the compiled computer programming language instructions, or object code, that run on computers but cannot be easily understood or modified by people