Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
HelpScout - Help Scout is a simple, straightforward way to provide excellent support
Crisp Chat - Multi-channel customer support software
GoSquared Live Chat - Beautiful, simple, and free live chat for your website
FLEX - An in-app debugging and exploration tool for iOS.
Drift - A messaging app that helps you grow your business.