I need a simple application to create/ Register new users. This registration will communicate with an API of an SMS gateway service provider. There shall be two simple applications. One is web based using which users can register with us to start sending SMS internationally using their purchased credits. For the time being we dont require any payment system but will go for it later. Another app is a small messanger type desktop app which lies in the taskbar minimized like the Yahoo Messanger. It should have username/password to login and then the simple SMS data inputs like destination number, Identity and Body. The same app should have options to view the logged in user's balance credit, sent numbers etc which can be retrieved from the API.
Please mention the languages used for development. For ex: PHP/MySQL or ASP.NET,[url removed, login to view]