Zendesk - Zendesk is a beautiful, lightweight help-desk solution.
Whelp - AI-based Omni channel customer support platform with chat bot system (On premise and cloud based)
Front - The platform for exceptional customer service at scale.
B2Chat - Instant messaging software to unify all of your chats in one single inbox.
Freshdesk - Freshdesk is a cloud-based customer support software that lets you support customers through traditional channels like phone and email, social channels like Facebook and Twitter, and your own branded community
SleekFlow.io - Sell, convert & support better on chat