Zendesk - Zendesk is a beautiful, lightweight help-desk solution.
Testimonial.to - Collect video testimonials in the simplest way
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
Trust - Trust lets you easily create online surveys, collect customer video testimonials and reviews, then display them with beautiful widgets on your business websites.
HelpScout - Help Scout is a simple, straightforward way to provide excellent support
Senja.io - Senja is the easiest way to collect, manage and share testimonials, online reviews and feedback from your customers.