Date Added: Sep 2011
Open source software development is a concept of build software by mutual sharing of source code. It is also software which released under such license which gives equal rights to both developers and users. In decade of 1980's Richard Stallman become pioneer of open source license, because it built a free software foundation, which legalized the above mentioned statement by introduced GNU GPL license. By introducing this open source software license the use, modification and redistribution of source code become legal for both users and developers. This feature of open source software movement becomes blinking star in the closed source software. Therefore, developer community becomes highly motivated for providing its services.