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
Drift - A messaging app that helps you grow your business.
Hotline - In-app chat,real-time engagement & self-service for your app
Talkus - Chat with your website users from Slack
HeyHi.sg - Video call with interactive whiteboard