Wikipedia
Clickatell
Clickatell is a mobile technology company providing an SMS-based communications platform and mobile transaction services engine/platform. It is one of the first and largest online SMS mobile messaging gateway providers in the world, covering a thousand networks in more than two hundred countries and territories.
Clickatell was the first company to enable a web to mobile app from any website in the world. A winner of several awards, its service has been recognized as a critical tool for emergency use in remote areas where Internet access is unavailable or unreliable.