Internet Relay Chat
Internet Relay Chat or IRC for short is a chat protocol that has been around since 1988.
It is still popular today via systems such as EFnet, DALnet, Freenode, etc.
Freenode has a web based char client called Kiwi IRC
You can find a comprehensive list of IRC clients with a comparison of features here .
When connecting to IRC your IP address is visible to everyone. In an effort to protect your privacy you can use a VPN, TOR, or a Bouncer to redirect and mask your IP.
Available IRC bouncers
Some available IRC bouncers include:
ircproxy - http://freshmeat.sourceforge.net/projects/ircproxy
jBouncer - http://www.jibble.org/jbouncer/
muh - http://muh.sourceforge.net/
psyBNC - https://psybnc.org/
shroudBNC - http://shroudbnc.info/
ZNC - https://wiki.znc.in/ZNC
- ↑ Internet Relay Chat 
- ↑ Eris Free Network (EFnet)
- ↑ The DAL IRC Network 
- ↑ Freenode 
- ↑ Comparison of Internet Relay Chat clients