GitHub Security 101: Best Practices for Securing Your Repository

In 1998, Christine Peterson coined the term "open-source software." She explained that "it was a deliberate effort to make this field of endeavor more understandable to newcomers and to business". This was also the year for the first “Open Source Summit” organized by O’Reilly.

Open-source software refers to source code that anyone can inspect, modify, and enhance. Also the difference between “proprietary” or “closed source” software is that the authors make their source code available to others who would like to view it, copy it, learn from it, change it or share it.