Anki
Description: Anki is a free, open-source flashcard program that uses spaced repetition to help users memorize information more efficiently. It allows users to create digital flashcards with text, images, audio, videos, and LaTeX support. Anki's algorithm schedules flashcards to show up at increasing intervals based on the user's performance to reinforce long-term memory.
Type: software
Pricing: Open Source
Facebook
Description: Facebook is a popular social networking platform that allows users to connect with friends, family, coworkers, and people with shared interests. Users can share photos, videos, status updates, join groups, and more.
Type: software
Pricing: Free