Rocket.Chat free open source chat solution.

UserEngage is a Real-Time Customer and User Engagement Tool for Big and for Small Businesses, designed for maximizing the conversion.

LiveCall enables your online visitors to call you without phone or any downloads.

Mibew Messenger is an open-source live support application written in PHP and MySQL.

Kayako is a customer service software.

Visitlead Live Chat is a live chat software for websites.