SupportNinja - Kick-Ass Outsourced Support for Startups
HelpScout - Help Scout is a simple, straightforward way to provide excellent support
ChatOutsource - Chat Outsource is a full service, 24/7 business live chat outsourcing solutions. Our professionals can handle all your customers’ concerns and turn all complaints and into appreciations.
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.
Helpware - Amazing Customer Experiences. Together.
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