How to contribute to Meta::CPAN
How to contribute to an Open Source project?
Live web sites with editable Open Source source code
Open Source Companies
Open Source Web application frameworks
Ready-made downloadable and deployable Open Source web applications
Finding an Open Source Python project to contribute to
Why to have Public Version Control System for Open Source Projects?
Why Git is better than Subversion for Open Source Projects
CMOS - Code-Maven Open Source podcast
Open Source Desktop Applications
Project Management, Quality Assurance, and Test Automation in Open Source Projects
Go Course: Go and Open Source