Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
HelpCrunch - HelpCrunch Live Chat: Turn prospects into customers, drive sales and improve retention with a rich toolbox combining modern live chat, in-app messenger, email marketing, CRM and marketing automation.
Live Chat by Sumo.com - Instantly communicate with customers, prospects & visitors
Stonly - Create interactive step-by-step guides
Drift - A messaging app that helps you grow your business.
Crisp Livechat - The most modern experience to talk to website visitors