"The PyCubed is an open-source, radiation-tested CubeSat framework that cost-effectively integrates ADCS, TT&C, C&DH, and EPS into a single PC104-compatible module programmable entirely in Python" - quote from the REx Lab website. At HSFL we currently use the PyCubed for the Artemis, Hiapo and Ke Ao CubeSats. To get started with the PyCubed go to this tutorial.

Other resources: