Open-source software (OSS) often refers that computer software whose source code are allowed to study, improve and at times also to distribute the software under certain permissions. As we all know, Open source software is very often developed in a public, collaborative manner.
Open Source Definition was defined by Bruce Perens who is one of the founders of Debian. And this definition is used by the Open Source Initiative to determine whether or not a software license can be considered open source.
Logo of Open Source Initiative
OSI is an organization dedicated to promoting open source software.It was founded in February 1998, by Bruce Perens and Eric S. Raymond, prompted by Netscape Communications Corporation publishing the source code for its flagship Netscape Communicator product.