Simple Desk is a WordPress plugin designed for small service-based businesses that want to knock it out of the park when it comes to ticketing and service calls. In it’s simplest form, Simple Desk is a ticketing and customer management system which is totally free (libre). Through optional paid add-ons, you can extend Simple Desk and connect it with FreshBooks, accept tickets via email, work with purchase orders, integrate with Google Calendar for service scheduling and many more features are on the horizon. Simple Desk does not take over your entire site but sits in the WordPress administration panel. The plugin can be used by WordPress developers and designers or even for their clients, such as plumbers and HVAC companies. The possibilities for support are endless.
Check it out on GitHub