Rambox, Skype, Pidgin, X-Lite, Pandion, Adium, Trillian, FreeConferenceCall.com, Empathy, Hamsket, ChatSecure, Conversations, Gajim, Ripcord, iChat, Zyptonite, CenterICQ, Ayttm, Jabiru, Kaiwa, OctroTalk, Pidgin on MacOSX, qutIM, Kadu, Highfive, MCabber are some alternatives to Psi+.