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

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.

ChatWoot - Open-source omnichannel customer engagement platform

LiveChat - LiveChat - premium live chat software. Approach customers directly on the website, make connections and drive more sales using LiveChat.

Nudgespot - Nudge your customer (via email etc) to take the next step