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

DigitalChalk - Online Training Software and Learning Management System (LMS)

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

Workplace by Facebook - Connect everyone in your company and turn ideas into action.

HelpScout - Help Scout is a simple, straightforward way to provide excellent support

Onehub - Onehub helps businesses securely share and control files in the cloud.