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.
CaptionBot by Microsoft - Analyzing and describing images by a bot
Speechyard - Learn English online through movies!
WTF is that? - Send any picture and it will tell you what it is!
Lingvo TV - Learn languages while watching movies on Netflix.
Instagram Caption Writer - Write nice formatted Instagram captions.