Escargot - Escargot is a custom server that makes old versions of MSN Messenger and Windows Live Messenger work again.

Pidgin - Pidgin is an easy to use and free chat client used by millions. Connect to AIM, MSN, Yahoo, and more chat networks all at once.

Signal - Fast, simple & secure messaging. Privacy that fits in your pocket.

Swift XMPP Client - Swift is an elegant, secure, adaptable and intuitive XMPP client, with features that make it...

Trillian - Trillian is a decentralized and federated instant messaging platform that lets your whole company send private and group messages, keep tabs on what co-workers are doing, share files, and much more.

LAN Messenger - LAN Messenger is a decentralized UDP IM-style chat client which supports usernames...