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
HappyFox Chat - HappyFox Chat is a live chat software for the websites.
Outbound Apps by Intercom - Embed apps right inside your messages
Crisp Chat - Multi-channel customer support software
indemandly - Live chat 2.0: Customer messaging that converts