I used to work in small sat. Two open source projects that were exciting to me when in the industry: http://cosmosrb.com/ https://cfs.gsfc.nasa.gov/
I founded an open-source library for orbital mechanics during my PhD, which is still going strong: https://github.com/tudat
We're developing a new set of modular libraries based off of Tudat: https://github.com/openastro. We're also building an open search engine for satellite subsystems: https://satsearch.co.
Some other interesting open-source stuff going on:
- https://librespacefoundation.org
- http://www.kubos.co
- https://github.com/esa/pykep
- https://gmat.gsfc.nasa.gov
I used to work in small sat. Two open source projects that were exciting to me when in the industry: http://cosmosrb.com/ https://cfs.gsfc.nasa.gov/