Tinode - Tinode Instant Messaging
Element.io - Secure messaging app with strong end-to-end encryption, advanced group chat privacy settings, secure video calls for teams, encrypted communication using Matrix open network. Riot.im is now Element.
IRCCloud - IRCCloud is a modern IRC client that keeps you connected, with none of the baggage. Stay synced and notified wherever you are with our web and mobile apps.
Chatib - Chatib is an online chat room where you can meet and chat with new people, make them friends, or even data them online.
SeaMonkey - The SeaMonkey project is a community effort to develop the SeaMonkey all-in-one internet...
Chattusa - Chattusa is a social network website that provides a free chat service and lets you connect with people from the USA without any hassle.