Captioned - Say, show, share. Create a 60 second captioned video.
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.
Captain - Discover what's trending and follow hashtags
Drops - Visual language learning.
Snoolink.me Caption Generator - No idea what to share?
Clozemaster - Learn a language through mass exposure to useful vocabulary in context.