Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
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.
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
COOLPHABETS - Helping kids around the world learn their native alphabets.
Plivo - Plivo simplifies your customer engagement.
Fun Learn - Games and Education & Reference