NWEA Assessments - NWEA Assessments creates a personalized assessment experience by adapting to each student's learning level.
Bootstrap Zero - Open-source, free Bootstrap templates collection.
ALEKS - ALEKS is a web-based artificially intelligent assessment and learning system that uses adaptive questioning to accurately determine exactly student knows.
Bootstrap Magic - Create your Bootstrap 4.0 themes easily with magic
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!
Material Design for Bootstrap 4 - Powerful and free UI KIT for the newest Bootstrap 4 and Material Design