Gale Messaging System

Instant Messaging and Presence Protocol (impp) Charter

Human Communications Protocol

Praya

AIM Clones

• tik

The ICQ Protocol Site

ICQ clients

• Licq
• mICQ a text-mode client
• kicq a KDE ICQ client
• gnomeICU
• KXicq a KDE ICQ client that speaks the ICQ v7 protocol
• Nicq an IRC-style ICQ client
• Centericq
• ickle
• gicq

Jabber

whozon a open-source alternative to ICQ and AIM

Keep in Touchanother open source alternative

Multi-protocol clients

• EveryBuddy! an instant messenger client that can handle AIM, ICQ, MSN messenger and Yahoo Messenger protocols
• Kopete