Irssi is a terminal based IRC client for UNIX systems. It also supports SILC and ICB protocols via plugins.

Jitsi (previously SIP Communicator) is an audio/video and chat communicator with full end-to-end encryption that supports prot ...

Skype is the most popular free voice-over IP and instant messaging service globally. It allows users to text, video and voice ...

XChat is an IRC chat program for both Linux (Open Source) and Windows (Shareware, 30-day trial). It allows you to join multipl ...

Mattermost is an open source, self-hosted Slack alternative. As an alternative to proprietary SaaS messaging, Mattermost bring ...

WeeChat is a fast, light and extensible chat client. It runs on many platforms (including Linux, BSD and Mac OS). WeeChat is: ...

Slack brings all your communication together in one place. It’s real-time messaging, archiving and search for modern teams.

Quassel IRC is a modern, cross-platform, distributed IRC client based on the Qt4 framework. Distributed means that one (or mul ...

HexChat is an IRC client based on XChat for Linux , but unlike XChat it’s completely free for both Windows and Unix-like syste ...

mIRC is a popular Internet Relay Chat client used by millions of people, and thousands of organizations, to communicate, share ...

Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework. It is a great solution for co ...

Pidgin is an easy to use, multi-protocol chat client client used by millions. Connect to AIM, MSN, Yahoo, XMPP, and more chat ...

HipChat is an instant messaging service designed for companies and teams. It has persistent chat rooms, one-to-one chat, searc ...

Self-hosted chat for small teams.

Features and Stuff BYOS (bring your own server) Persistent messages Multiple rooms New m ...

Matrix.org is a growing ecosystem for open, decentralised chat, VoIP and IoT communication. The Matrix project defines an ope ...