Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Intercom App Store - Integrate with Intercom and grow your business
Live Chat by Sumo.com - Instantly communicate with customers, prospects & visitors
Hotline - In-app chat,real-time engagement & self-service for your app
Actions from Slack - Turn Slack messages into tickets, issues, tasks, and more.
SupportNinja - Kick-Ass Outsourced Support for Startups