- Open Source Software is software copied for free.
- The author must be credited, and any changes made by someone must be able to be used by the author.
- The author of a piece of open source software puts licenses in place. Others can use and modify the written code, as long as the licenses are followed.
- A department from the original code is called a branch, incorporating a change or patch into the original code is called upstreaming and a permanent split is called a fork.
- The more contributors to code, the more essential it is to have a way of collaborating on changes.