Finally, I've completed my first commercial software. It takes around four months to complete (off course I didn't worked every day). I used PHP, jQuery, jQueryUI, and MySQL. The software includes all the basic functionality of a CRUD system. It will be used in a dish company. They can register their customers into the system, maintain their monthly bill, dues etc. They can generate custom reports like zone based report, due report etc. They can maintain information about their staffs too. Here are some of the screen shots: