Benefits of using HTTP API: For Source Code http://goo.gl/OKkDK3
HTTP API can send more than 100 messages at a time via any kind of application/portal.
You can check the balance of your account with expiry date via your application/portal.
You can check the Delivery status of your single or group SMS everything in a single places without login your web interface.
Unicode API allows you to send SMS in different languages (Tamil, Hindi, Telugu, Malayalam, Guajarati, and Marathi).