Twilio - Brings voice and messaging to your web and mobile applications.
HiHello - Exchange contacts, seamlessly.
Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
Typecard - The free and easy way to create your digital business card
Plivo - Plivo simplifies your customer engagement.
Blinq.me - Create your free digital business card in seconds. Recipients don’t need the Blinq app to receive your card. Raise your networking game today.