Description: Kanzen is a free and open-source flashcard application for Windows, macOS, Linux, iOS and Android. It allows users to create digital flashcards to study various topics effectively with features like spaced repetition algorithms, note taking, statistics and exporting options.
Type: software
Pricing: Open Source
Description: Wikipedia is a free, online encyclopedia written and maintained by a community of volunteers around the world. It contains over 50 million articles in hundreds of languages.
Type: software