Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
ChatWhale - Gamify your customer communication and loyalty rewards
Crisp Chat - Multi-channel customer support software
Promoter - The Most Effective Way To Engage And Learn From Customers
Drift for Enterprise - Automatically turn website traffic into sales meetings
LaunchKit - Open Source - A popular suite of developer tools, now 100% open source.