Befront - Learn UX/UI design skills in practice with bite-sized tasks
NWEA Assessments - NWEA Assessments creates a personalized assessment experience by adapting to each student's learning level.
Hyper - Extensible, cross-platform terminal built on open web standards.
ALEKS - ALEKS is a web-based artificially intelligent assessment and learning system that uses adaptive questioning to accurately determine exactly student knows.
VUIchallenge - Daily challenges to improve your voice design skills
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!