AirHelp - Get paid when you're delayed!
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.
Service - Customer service issues solved for you, on demand, for free.
Freshservice - Freshservice: the one-stop cloud solution for all your IT management needs.
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
AirAdvisor - AirAdvisor is an airline compensation company advocating for air passenger rights