Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Outbound Apps by Intercom - Embed apps right inside your messages
HelpSpace - The team inbox with super powers
Intercom App Store - Integrate with Intercom and grow your business
Drift - A messaging app that helps you grow your business.
indemandly - Live chat 2.0: Customer messaging that converts