Word of the Day - Learn one new word, every day
Duolingo - Duolingo is a free language learning app for iOS, Windows and Android devices. The app makes learning a new language fun by breaking learning into small lessons where you can earn points and move up through the levels. Read more about Duolingo.
Obstino - Obstino is your key to effectively learning, practicing, and retaining new words for a more robust vocabulary.
Wordd - Quickly look up vocabulary, abbreviations, acronyms, slang
Fluently Beta - Write fluently in any language
Synonymful - Improve your vocabulary and communicate like a pro.