Open Source

 WordPress, Open Cart , magneto ,
 YII , PHP ,Ajax , Jquery

WordPress Plugins

Appointment-Calendar
http://wordpress.org/extend/plugins/appointment-calendar/

ReadMe Creator
http://wordpress.org/extend/plugins/readme-creator/

Yii Application.

Easy Reminder
http://easyreminder.net/

Appointpress
http://appointpress.com/

Wordpress web site

Appointzilla
http://appointzilla.com/