Issuetrak - Issue tracking software for help desk and customer service

Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.

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!

Pure Chat - Pure Chat provides FREE live website support and sales chat without the hassle! It's web site chat, simplified.

Kapdesk - Kapdesk offers support teams with a helpdesk software to streamline support tasks.

Zendesk - Zendesk is a beautiful, lightweight help-desk solution.