NWEA Assessments - NWEA Assessments creates a personalized assessment experience by adapting to each student's learning level.
hackattic - No nonsense, real world programming challenges
ALEKS - ALEKS is a web-based artificially intelligent assessment and learning system that uses adaptive questioning to accurately determine exactly student knows.
HackerRank - HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.
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!
Takehome - Effective and humane coding challenges for candidates