How anyone can contribute to open source software in their job: 
Imagine a world where your software works perfectly for you. It meets your needs, does things your way, and is the ideal tool to achieve great things toward your goals.
Open source software stems from these roots. Many projects are built by engineers that have a problem and build a solution to solve it. Then they openly share their solution with others to use and improve.
read more: Opensource.com crobson
Supporting Open Source.
Have you tried: Visiting Port Elizabeth?