Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Crisp Chat - Multi-channel customer support software
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.
Drift for Enterprise - Automatically turn website traffic into sales meetings
smooch - Smooch connects your business software to all the world’s messaging channels for a more human customer experience.
Drift - A messaging app that helps you grow your business.