There are 2 repositories under integrated-navigation topic.
Open-source GNSS + inertial navigation, sensor fusion simulator. Motion trajectory generator, sensor models, and navigation
NaveGo: an open-source MATLAB/GNU Octave toolbox for processing integrated navigation systems and performing inertial sensors analysis.
NextPilot Flight Control System is a powerfull, scalable and advanced autopilot, which is designed to be easily used in education, research, and industry.
武汉大学导航工程2023年大三下学期综合实习
PySide2 UI for plotting IMU outputs, GNSS or GNSS/INS positioning results