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.
Conduct Exam - Conduct Exam is a robust online exam software which offers impeccable assessment solutions
LimeSurvey - LimeSurvey: the Online-Umfrage Tool - Open-Source Suryeys
Treehouse - Treehouse is an award-winning online platform that teaches people how to code.
Quizlet - Quizlet allows you to review and create flashcards for a variety of subjects, such as math and reading.
Pantheon - The professional website platform for Drupal & WordPress sites.