Jitsi
Open Source
Jitsi (formerly SIP Communicator) is a free and open source multiplatform voice (VoIP), videoconferencing and instant messaging application.
LINE
Freemium
LINE is a new communication app which allows you to make free voice calls and send free messages whenever and wherever you are.
appear.in
Freemium
appear.in provides one-click video conferences right in your browser without requiring PIN codes or additional software.
Tango
Freemium
Tango is the messaging app with the best video calling. All messages and calls are free.
Zoiper
Freemium
Zoiper is an easy to use sip video softphone, with excellent voice quality and easy to setup.
Linphone
Open Source
Linphone is a free voice over IP (VoIP) service and SIP client.
Ring
Open Source
Ring (SFLphone) is an open-source SIP-compatible softphone and instant messenger for Linux, Microsoft Windows, OS X and Android.
Xabber
Open Source
Xabber (XMPP and Jabber) is a XMPP client for the Android Operating System.
Conversations
Freemium
Conversations is an open source XMPP/Jabber client for the Android platform.
Compare X-Lite with alternatives
Compare Conversations and X-Lite and decide which is most suitable for you.