Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.

Hiver - Manage Customer Support, Sales and Projects right from your Gmail inbox. Collaborate with Shared Labels, Shared Contacts, email notes, email reminders and email templates

Drift - A messaging app that helps you grow your business.

Front - The platform for exceptional customer service at scale.

ChatSupport.co - ChatSupport is a live chat software for websites which lets you interact with website visitors and customers through customizable chat widgets.

HelpScout - Help Scout is a simple, straightforward way to provide excellent support