Studylib is described as 'The easiest way to learn faster and retain knowledge for longer. Powered by cognitive science research our spaced repetition platform makes studying as efficient as humanly possible' and is a flashcard learning tool in the education & reference category. There are more than 100 alternatives to Studylib, not only websites but also apps for a variety of platforms, including Android, iPhone, iPad and Windows apps. The best Studylib alternative is Anki, which is both free and Open Source. Other great sites and apps similar to Studylib are AnkiDroid, RemNote, Memrise and Mochi.