Twilio - Brings voice and messaging to your web and mobile applications.
YourQuote - YourQuote is an interactive mobile app that helps you to write stories, quotes, screenplays, poems, and books.
Plivo - Plivo simplifies your customer engagement.
JotterPad - JotterPad Writer for Android — Turn your thoughts into text. Go about your creative writing without distractions, write to your hearts content...
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
Inkspired - Inkspired is one of the largest platforms that help professional and new writers/readers to discover, publish, and write creative stories or books.