*
Adium (macOS, Windows, Linux)
* BeeBEEP (macOS)
* BitlBee (Linux, Windows, macOS)
* Lagerfeuer (macOS, Windows)
* Kolloquium (macOS)
* Gespräche (Android)
* Zwietracht (Windows, macOS, Linux, Android, iOS)
* Empathie (Linux)
* Facebook Messenger (Windows, macOS, Linux, Android, iOS)
* Franz (macOS, Windows, Linux)
* Gajim (Linux, Windows, macOS)
* Google Hangouts (Windows, macOS, Linux, Android, iOS)
* HexChat (Linux, Windows, macOS)
* HipChat (Windows, macOS, Linux, Android, iOS)
* IRCcloud (Windows, macOS, Linux, Android, iOS)
* Jitsi (Windows, macOS, Linux, Android, iOS)
* Kiwi IRC (Windows, macOS, Linux, Android)
* Sanftmütig (Windows, macOS, Linux)
* mIRC (Windows)
* Pidgin (Windows, macOS, Linux)
* Quassel (Linux, Windows, macOS)
* Rambox (Windows, macOS, Linux)
* Redaktion (Windows, macOS, Linux)
* Retroshare (Windows, macOS, Linux)
* Skype (Windows, macOS, Linux, Android, iOS)
* Slack (Windows, macOS, Linux, Android, iOS)
* Sylc (Linux, Windows, macOS)
* Trillian (Windows, macOS, Linux)
* Tumult IM (macOS)
* Viber (Windows, macOS, Linux, Android, iOS)
* Draht (Windows, macOS, Linux, Android, iOS)
* XMPP (Windows, macOS, Linux, Android, iOS)
* Zulip (Windows, macOS, Linux, Android, iOS)