Here is one piece of information which should appeal to the developers who are among you. The famous NASA has put online a new version of its catalog listing hundreds of source codes of their own, which they offer to the community in “royalty-free” mode.
Health, propulsion, life support systems, data processing algos, aeronautics, image processing, vehicle management (yes, even rovers that roam on Mars), simulators (including spacewalks) … etc
There’s plenty to do and it’s a real treasure.
If you’re interested in digging into it, it’s all here.