Omegle - Omegle is one of the most popular online chat website allowing user to communicate with anyone without registration.
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
CooMeet - CooMeet is one of the best and leading next generation of video dating web-based application specially designed for those users who want to talk online to people they have never met.
Talkus - Chat with your website users from Slack
Chatrandom - Chatrandom provides medium to users for having chat at random with different users around the globe.
Speaklyn - Website visitors chat with you on Facebook Messenger