I contributed to the development of OpenIRIS. OpenIris is an adaptable, open-source framework for video-based eye-tracking, developed in C# with a modular design for plugin extension. It supports online and offline recording, binocular pupil tracking, and 3-D eye motion capture.
To be more specific, I added support for USB version of Flir Blackfly cameras, and implemented a online calibration module to calculate the head pose from gravitational vector recorded by an IMU.