This software is well designed and highly customizable
Gimkit - A live classroom quiz game made by high school students
Avanset VCE Exam Simulator - VCE Exam Simulator is a test engine designed specifically for certification exam preparation.
GitHub Classroom - Your course assignments on GitHub
LearnUpon - Create and deliver online courses to your employees, clients and partners. LearnUpon is the fastest growing learning management system in the world.
TeenUp - A learning platform designed for teens by teens
Respondus - Respondus is the name of one of the best assessment programs for managing learning management systems.