Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Live Chat by Sumo.com - Instantly communicate with customers, prospects & visitors
Mailchimp Newsletters widget by LiveChat - LiveChat newest integration with Mailchimp helps you get in touch with your website visitors by displaying an interactive greeting that allows them to sign up to your newsletter list.
GoSquared Live Chat - Beautiful, simple, and free live chat for your website
Gist Platform - Live chat, bots & marketing automation -- free.
Drift - A messaging app that helps you grow your business.