CaptionBot by Microsoft - Analyzing and describing images by a bot
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.
Instagram Caption Writer - Write nice formatted Instagram captions.
Mondly - Learn 33 languages in 500 bite-size lessons and 14 conversational modules.
WTF is that? - Send any picture and it will tell you what it is!
MondlyAR - Learn languages in augmented reality