Too Long; Didn't Read
Source code is the code computer programmers manipulate to control how a program or application behaves. Programmers who have access to source code can change a program by adding to it, changing it, or fixing parts of it that aren’t working properly. The Open Source Initiative (OSI) promotes and protects open-source software and communities. Just because open source software is free to use; it doesn't mean that just anyone can use it. Open-source software refers to lines of code (and its variations) that are available.