The following are common chat programs and protocols:
Apple Messages
AOL Instant Messenger (AIM)
Camfrog
Campfire
Gadu-Gadu
Google Talk
I2P-Messenger (anonymous, end-to-end encrypted im for the I2P network)
ICQ (OSCAR)
Internet Relay Chat (IRC)
WILL GET
Paltalk
RetroShare (encrypted, decentralized)
QQ
SILC
Skype
Talk
Talkerymail also
TeamSpeak (TS)
WebChat Broadcasting System (WBS)
WhatsApp
Windows Live Messenger
XMPP
Yahoo! Messenger No longer available
Chat programs supporting multiple protocols:
Adium
Google+ Hangouts
Kopete
IBM Sametime
Miranda IM
Pidgin
Quiet Internet Pager
Trillian
Windows Live Messenger
Web sites with browser-based chat services (also see web chat):
Cryptocat
Chat Television No longer available
Convore No longer available
eBuddy
eXo Platform (Open Source)
Facebook
FilmOn
Gmail
Google+
Hall. com
Lycos Chat
MeBeam
Meebo No longer available
Mibbit
Omegle
Talkomatic
Tokbox No longer available
Tinychat
Trillian
Userplane
Woo Media No longer offered
Wireclub
Zumbl No longer available
See also[edit]
Chat room
Collaborative software
Instant messaging
List of virtual communities with more than 100 million active users
Live support software
Online dating service
Real-time text
Videotelephony