Google Open Source - All of Googles open source projects under a single umbrella
1Kprojects - Neglected side projects for less than $1000.
Code NASA - 253 NASA open source software projects
Ship Your Side Project - Make enormous progress on your side project in just 6 weeks
Disney Open Source - Explore Disney's Open Source projects
Maker Fellowship - Maker Fellowship is a 4-week program in which we offer a $500 equity-free grant to indie makers to ship their next project.