Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
Bizness Apps - Create your own app or become a reseller and build apps for others
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
Fuse - Fuse is a UX tool suite for mobile app designers and developers.
Plivo - Plivo simplifies your customer engagement.
Siberian CMS - Siberian is an Open-Source and Free App Maker. Unlimited Push Notifications. Unlimited features. Fully Customizable. Download it and build your own app now!