Slaask - Slaask enables you to set up a dedicated live chat channel on your Slack.
Cliengo - Cliengo is a Chatbot platform that converts the website visitors into qualified leads.
JivoChat - JivoChat is a live chat that enables you to talk to visitors on your website
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
Chatlio - When you have a business to run, your average instant messaging software just will not do. You need an internal presence upon which your entire team can collaborate on. Read more about Chatlio.
Pure Chat - Pure Chat provides FREE live website support and sales chat without the hassle! It's web site chat, simplified.