The list of open source ticketing software we can supply or host, install, configure, and support (at the time of writing) is as follows :-

Title	Version	Description	Rating
eTicket	1.7.3	eTicket is a widely-used open source support ticket system.
osTicket	1.6.rc4	osTicket is a widely-used open source support ticket system.

If there is a title that is missing off this list we might be able to install it for you.