Bazoocam - Bazoocam is a popular chat website that rapidly connects you with strangers to chat.

Spike - Spike solves businesses' communication chaos by bringing together email, team chat, collaborative docs, and meetings, into one feed.

Zingo - Zingo is a communication app by Buzz Group Limited through which you can connect with a large community of other bright minds by engaging in live chat with them.

Keybase Chat - End-to-end encrypted chat built into Keybase

Omegle - Omegle is one of the most popular online chat website allowing user to communicate with anyone without registration.

Crypho - End-to-end-encrypted messaging and file sharing