GitHub Visualizer - Enter user/repo and see the project visually
NWEA Assessments - NWEA Assessments creates a personalized assessment experience by adapting to each student's learning level.
Codeology - Open-source algorithm that visualizes GitHub projects
ALEKS - ALEKS is a web-based artificially intelligent assessment and learning system that uses adaptive questioning to accurately determine exactly student knows.
Octohunt - Search to find developers in your city on Github.
iSpring QuizMaker - iSpring Quiz Maker is easy-to-use quiz software. Create interactive quizzes and surveys in HTML5 & Flash and embed them in a website or publish for any LMS!