HelpNinja - Simple & Affordable help desk
HelpScout - Help Scout is a simple, straightforward way to provide excellent support
Outbound Apps by Intercom - Embed apps right inside your messages
Intercom App Store - Integrate with Intercom and grow your business
SupportYourApp - Connecting talented people with the blooming IT industry to help them grow faster by outsourcing support.
Hotline - In-app chat,real-time engagement & self-service for your app