OsTicket

By using osTicket, you may now manage, organize and doing the archives of all your support and responses just in one place whilst conferring your clients with responsibility and receptiveness they always deserve to have.

It always appears to be the alluring alternative to the highly cost and complex client support systems. osTicket is quite simple, lightweight, much trustworthy, open source, web based and much easier for setting it up and using. The most interesting thing about is, it is always free of cost. It has been created in a way to provide your smooth support and streamline all of your support requests and improving the client support competence by conferring the staff with tools they always require to deliver the goods faster than ever.

Some of the features include:

Web and E-mail support, auto-response, canned replies, internal notes, help topics, alerts and notices, support history and no sign up requirements and so on.