iSpring Suite - A comprehensive yet easy-to-use authoring tool for creating professional online courses like a pro – even if you’re a complete beginner.
Anki - Anki is a program which makes remembering things easy. Because it's a lot more efficient than traditional study methods, you can either greatly decrease your time spent studying, or greatly increase the amount you learn.
Articulate Storyline - Articulate Storyline is a program that allows you to create interactive courses of any kind with templates and a simple system. There is a free trial offered so that you can determine whether you want to use the program further or not.
LimeSurvey - LimeSurvey: the Online-Umfrage Tool - Open-Source Suryeys
Adobe Captivate - Adobe Captivate is a rapid responsive authoring tool that is used for creating elearning content...
Quizlet - Quizlet allows you to review and create flashcards for a variety of subjects, such as math and reading.