Web Optimizer - IT Management
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.
CID - Cloud-based Computer Diagnostic App
Freshdesk - Freshdesk is a cloud-based customer support software that lets you support customers through traditional channels like phone and email, social channels like Facebook and Twitter, and your own branded community
BeAnywhere Support Express - Get Live From the Cloud
HelpScout - Help Scout is a simple, straightforward way to provide excellent support