Skype
Freemium
Skype is an instant messaging and VOIP (Voice Over Internet Protocol) client to communicate with people in a distant place.
Hangouts
Free
Hangouts is an instant messaging software developed by Google.
Trillian
Freemium
Trillian is a proprietary multiprotocol instant messaging application.
Jitsi
Open Source
Jitsi (formerly SIP Communicator) is a free and open source multiplatform voice (VoIP), videoconferencing and instant messaging application.
Imo
Free
Imo free video calls and chat is a kind of Communication apps for Android.
Linphone
Open Source
Linphone is a free voice over IP (VoIP) service and SIP client.
Franz
Free
Franz is a free messaging app /former emperor of Austria, that combines chat & messaging services into one application.
Rocket.Chat
Open Source
Rocket.Chat free open source chat solution.
qutIM
Open Source
qutIM is free and open-source multiprotocol (ICQ, Jabber, Mail.Ru, IRC, VKontakte) instant messenger.
Zoiper
Freemium
Zoiper is an easy to use sip video softphone, with excellent voice quality and easy to setup.
Bit Chat
Open Source
Bit Chat is a secure, peer-to-peer, open source instant messenger with end-to-end encryption.
QuteCom
Open Source
QuteCom (WengoPhone) is a free-software SIP-compliant VoIP client.
Phoner
Free
Phoner and PhonerLite are softphone applications for Windows operating systems available as freeware.
Pidgin
Open Source
Pidgin is a free and open-source chat client which supports AIM, Google Talk, ICQ, XMPP protocols.
Tox
Open Source
Tox is a peer-to-peer instant-messaging and video-calling protocol that offers end-to-end encryption.
Signal
Open Source
Signal is the most scalable encryption tool.
Miranda IM
Open Source
Miranda IM is an open source multiprotocol instant messaging application, designed for Microsoft Windows.
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.
Mattermost
Open Source
Mattermost is an open source, private cloud Slack-alternative, Workplace messaging for web, PCs and phones. MIT-licensed.
Ring
Open Source
Ring (SFLphone) is an open-source SIP-compatible softphone and instant messenger for Linux, Microsoft Windows, OS X and Android.
Spark
Open Source
Apache Spark is an open-source cluster-computing framework.
Psi+
Open Source
Psi is a cross-platform powerful XMPP/Jabber client (Qt, C++) designed for the Jabber power users. Psi+ is a development branch of Psi IM XMPP/Jabber client.
Blink
Freemium
Blink is the best real-time communications client using the SIP protocol.
Coccinella
Open Source
Coccinella is a free and open-source cross-platform client for the XMPP/Jabber-instant messaging-protocol.
MicroSIP
Open Source
MicroSIP is a portable SIP softphone based on the PJSIP stack available for Microsoft Windows.
Compare YakYak with alternatives
Compare Facebook Messenger and YakYak and decide which is most suitable for you.