Haystack - Your new business card.
Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
PING - PING (Partimage Is Not Ghost) is a free software Linux-based live CD ISO built upon the partimage...
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
HiHello - Exchange contacts, seamlessly.
Plivo - Plivo simplifies your customer engagement.