Pupil is a project in active, community driven development. Pupil Core mobile eye tracking hardware is accessible, hackable, and affordable. The software is open source and written in Python and C++ when speed is an issue.
This is a proof-of-concept Bluetooth receiver that can receive bluetooth (advertising) packets using an FPGA and an antenna, read: straight RF into a SERDES port sampling at 5Ghz. It's written in the nmigen HDL targeting FPGAs.
scikit-rf (aka skrf) is an Open Source, BSD-licensed package for RF/Microwave engineering implemented in the Python programming language. It provides a modern, object-oriented library which is both flexible and scalable.