Bulma - Bulma is an open source CSS framework based on Flexbox and built with Sass. It's 100% responsive, fully modular, and available for free.
NWEA Assessments - NWEA Assessments creates a personalized assessment experience by adapting to each student's learning level.
Milligram - A minimalist CSS framework
Canvas by Instructure - The Canvas LMS is the world's fastest growing learning management system. Check out favorite features and schedule a live demo!
React95 - Refreshed windows95 UI components for modern web apps
ExamView Assessment Suite - ExamView lets you can create assignments, launch classroom assessment questions and collect real-time responses to evaluate student performance.