Trillian
Freemium
Trillian is a proprietary multiprotocol instant messaging application.
Imo
Free
Imo free video calls and chat is a kind of Communication apps for Android.
IM+
Freemium
IM+ supports simultaneously major IM services, including Google Talk, Twitter DMs, Yahoo!, AIM/iChat, ICQ, Jabber (and Slack through Jabber), etc.
KakaoTalk
Freemium
KakaoTalk (Korean: 카카오톡), or sometimes KaTalk, is a free mobile instant messaging application for smartphones with free text and free call features.
Disa
Open Source
Disa is your new messaging hub. Conversations from different services can seamlessly be joined together, or disbanded within seconds.
Jitsi
Open Source
Jitsi (formerly SIP Communicator) is a free and open source multiplatform voice (VoIP), videoconferencing and instant messaging application.
Facebook Messenger
Free
Facebook Messenger is the official Facebook app that lets you have text conversations with all of your friends on the popular social network.
ICQ
Free
ICQ is an open source instant messaging software.
Tencent QQ
Free
Tencent QQ (QQ) is an instant messaging software service.
Compare qutIM with alternatives
Compare Facebook Messenger and qutIM and decide which is most suitable for you.