Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
tawk.to - tawk.to is a free live chat app that lets you monitor and chat with visitors on your website or from a free customizable page
HubSpot - Grow Better With HubSpot: Software that's powerful, not overpowering. Seamlessly connect your data, teams, and customers on one CRM platform that grows with your business.
Drift - A messaging app that helps you grow your business.
HelpForShopping - Improve your sales performance by helping users find the most suitable product for them
Tars - TARS enables users to create chatbots that replaces regular old webforms.