Decent helpdesk plugin for WordPress. If you want support, get a license from them. But their support is terrible in general.
In their own words:
Live Demo
Awesome Support is the most versatile and feature-rich support plugin for WordPress. It is the only helpdesk & support ticketing plugin that can match the feature set of an SAAS solution such as Zendesk or Helpscout.
And your customers can be using it in just 5 mins! After installing and activating the plugin, just answer a few questions in the startup wizard and your helpdesk will be ready for your customers.
Take a product tour in the video below where you can see the extensive list of and premium features that will be available on your new helpdesk! You can also go hands-on with the Live Demo or scroll down to the bottom of this page for screen shots.