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
Aboardly - IFTTT for automated customer emailing
Hotline - In-app chat,real-time engagement & self-service for your app
indemandly - Live chat 2.0: Customer messaging that converts
Twixor - Customer communications made interactive and dynamic!