Zopim - Live chat is a faster and more personal way for you to engage your customers. Free for 14 days. No credit card required.

Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.

Elevio - Learn how elevio can help bring all your support channels into one, to provide the best support possible for your users

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

Banckle Chat - Banckle Chat is a online chat & customer support solution.

JivoChat - JivoChat is a live chat that enables you to talk to visitors on your website