Skype
Freemium
Skype is an instant messaging and VOIP (Voice Over Internet Protocol) client to communicate with people in a distant place.
Tor
Open Source
Tor is a free software that helps to hide the identity while browsing sites online.
Telegram
Free
Telegram is a free cloud-based instant messaging platform.
Discord
Free
Discord is a freeware proprietary VoIP application designed for gaming communities.
Jitsi
Open Source
Jitsi (formerly SIP Communicator) is a free and open source multiplatform voice (VoIP), videoconferencing and instant messaging application.
Glip
Freemium
Glip is fully searchable, real-time group chat; video chat, task management, file sharing app.
Freenet
Open Source
Freenet is a peer-to-peer platform for censorship-resistant communication. It uses a decentralized distributed data store to keep and deliver information, and…
Rocket.Chat
Open Source
Rocket.Chat free open source chat solution.
GNUnet
Open Source
GNUnet is a free software framework for decentralized, peer-to-peer networking and an official GNU package.
ZeroNet
Open Source
ZeroNet is a decentralized Internet-like network of peer-to-peer users.
Conversations
Freemium
Conversations is an open source XMPP/Jabber client for the Android platform.
Zulip
Open Source
Zulip is a chat and collaborative software.
Wickr
Free
Wickr is an instant messenger application.
Gitter
Freemium
Gitter is an open source instant messaging and chat room system for developers and users of GitHub repositories.
Pidgin
Open Source
Pidgin is a free and open-source chat client which supports AIM, Google Talk, ICQ, XMPP protocols.
Hangouts
Free
Hangouts is an instant messaging software developed by Google.
WhatsApp Messenger
Free
WhatsApp Messenger is an instant messaging platform owned by Facebook.
Signal
Open Source
Signal is the most scalable encryption tool.
Empathy
Open Source
Empathy is an instant messaging (IM) and voice over IP (VoIP) client which supports text, voice, video, file transfers, and inter-application communication ov…
I2P
Open Source
The Invisible Internet Project (I2P) is a garlic routing using overlay network and darknet that allows applications to send messages to each other pseudonymou…
Mattermost
Open Source
Mattermost is an open source, private cloud Slack-alternative, Workplace messaging for web, PCs and phones. MIT-licensed.
Gajim
Open Source
Gajim is an instant messaging client for the XMPP protocol which uses the GTK+ toolkit.
Xabber
Open Source
Xabber (XMPP and Jabber) is a XMPP client for the Android Operating System.
Let's Chat
Open Source
Let's Chat is a persistent messaging application that runs on Node.js and MongoDB. It's designed to be easily deployable and fits well with small, intimate te…
TribeScale
Free
TribeScale is an All-in-One platform to coordinate your team around what really matters - communication, goals, decisions, tasks and results.
Dialog Messenger
Free Personal
Dialog Messenger is a handy and feature-rich enterprise multi-device messenger available for server or cloud.
ejabberd
Open Source
ejabberd is an XMPP application server, written mainly in the Erlang programming language.
Openfire
Open Source
Openfire (Wildfire, Jive Messenger) is an instant messaging (IM) and group chat server that uses XMPP server written in Java.
Compare Matrix.org with alternatives
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