Issuetrak - Issue tracking software for help desk and customer service
Survicate - Collect feedback on your website and find out more about your visitors.
AzureDesk - Azuredesk.co is an online customer service software and support ticket help desk application for small business and fast-growing companies. Get a free trial today!
Helprace - Helprace is a customer service software suite linking a ticket system with help desk software, giving customer support agents a complete helpdesk solution.
Deskun - Deskun is a Help Desk system inside Gmail. It enables you to support customers directly from your mailbox, manage projects, and use free features for Gmail.
UseResponse - Open-source, self-hosted customer feedback software, live chat and helpdesk system that you can install on your server. Organize documentation using knowledge base and get feedback from social networks with centralized system