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.

PanQuiz - Create on-line quizzes and assessments

LimeSurvey - LimeSurvey: the Online-Umfrage Tool - Open-Source Suryeys

Moodle - Moodle is the world's most popular learning management system. Start creating your online learning site in minutes!

Quizlet - Quizlet allows you to review and create flashcards for a variety of subjects, such as math and reading.

QuestBase - QuestBase is a web-based, cross-platform application that provides everything you need to create and manage your assessments, tests, quizzes and exams.