Answer Customers is a tool that makes it easy to import answers to customer questions from Zendesk into WordPress.
WordPress Live Support, a Powerful, Simple and Flexible WordPress Support.
Quip Support is a complete customer support solution built directly into your WordPress dashboard.
Simple chat application for customer support.
Cool facebook chat messenger will add instant contact or live chat support button on your wordpress pages anywhere using shortcode.
Helprace is a customer support help desk, customer community and knowledge base accessible through a feedback widget.
SupportFlow is a web based help desk software. It allows teams to manage support tickets using a web interface.
yTicket for WP is a plugin that allows you to interface your own website created with the WP platform for Help Desk Ticketing System yTicket.