DisplayCAL (formerly known as dispcalGUI) - Open Source Display Calibration and Characterization powered by Argyll CMS
elevio hub - For continuous user education
Lagom LCD monitor - Lagom LCD Monitor is one of the best monitor calibration software that combines monitor calibration technology with an easy-to-use interface.
List.community - Easy way to browse curated lists on GitHub
QuickGamma - monitor gamma calibration, monitor gamma correction, monitor gamma adjustment, adjust monitor gamma, calibrate monitor gamma, adjust monitor brightness and contrast, monitor gamma correction utility
GitKraken - The intuitive, fast, and beautiful cross-platform Git client.