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
Chalk - Chalk is a calculator that tries to do right what others do wrong.
LiveChat - LiveChat - premium live chat software. Approach customers directly on the website, make connections and drive more sales using LiveChat.
chitchat - Chat Room with Selfies and Pagers (yes, pagers!)
Crisp Chat - Multi-channel customer support software
Twist - Check fewer notifications, do more meaningful work. Twist is the team communication app for calmer, more organized, and more productive teamwork.