Green Leave is a codeigniter based leave management system. This is apt for small medium business purpose (SMB).
Responsive feature of this product is the main highlight of the product as the employee can login to the system even using their mobile devices.
While applying through the system, automatic email is send to the concern person as leave application alert. The manager/team lead will have an option to approve/reject the leave application. The leave application status (Reject/approved) would be visible in the user account also an automatic email would be send to the user.
You can see a demo for working on the below link: