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
Wordnik
Description: Wordnik is an online English dictionary and language resource that provides dictionary and thesaurus content, example sentences, audio pronunciations, and word-of-the-day features. It covers over 4 million words and includes definitions, pronunciations, etymologies, examples, and more.
Type: software