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.
Reverse Dictionary - Describe a concept and get back a list of words
Lingvo TV - Learn languages while watching movies on Netflix.
Writefull Thesaurus - A Google Docs add-on that uses AI to give you synonyms
Mondly - Learn 33 languages in 500 bite-size lessons and 14 conversational modules.
Meaning Monkey - Find the definition and meaning of anything.