p2p.chat is a free video conferencing application using WebRTC for peer-to-peer communication. No login required. No tracking. Decentralized.
Jitsi Meetand
Jitsi Desktop
Tencent QQ, generally referred to as QQ, is the most popular free instant messaging computer program in Mainland China, and has over 856.2 million users. In April 2010, QQ.com ranked 10th overall in Alexas internet rankings.
Poezio is a free console XMPP client (the protocol on which the Jabber IM network is built).
Pidginand
Conversations
One app for all your communication services! Use messengers like WhatsApp, Telegram, Messenger, Skype, Gmail and many more in one app!.
ScudCloud is a non official open-source Ubuntu desktop client for Slack.
CenterIM is a text-mode IM client for Linux, *BSD, Solaris and other Unices that uses libpurple as a communication backend.
Convos is an IRC client that runs in your browser and brings the IRC experience into the 21st century. It features a persistent bouncer on the server side that will keep you online even after you close your browser window. Want to use Convos on your phone? No problem!
Zero Knowledge, end-to-end encrypted collaboration tool for teams and businesses. Reviewable source code. Python wrapper for bots & integrations. Encryption white paper. Native offline mode. Faster file-sharing. Built for enterprise.
MCabber is a small XMPP (Jabber) console client. It includes features such as SASL/SSL/TLS support, MUC (Multi-User Chat) support, history logging, command completion, OpenPGP encryption, OTR (Off-the-Record Messaging) support, dynamic modules and external action triggers.
Pidginand
Psi XMPP Client
Bee allows you to have a website, a work platform, a CRM and up to 100 people working at the same time.
Make video calls to anybody in the world with a private connection. Share the conversation by sharing url.
Ayttm is an instant messaging (aka chat) client that provides all-in-one chat functionality for several major instant messaging services from one simple program. Ayttm "Contacts" allow you to refer to several accounts of the same person from a single contact name...
Collect all of those special little moments with the most important person in your life, in one app.
Trackaview is a PHP web script that lets you monitor and communicate with your website visitors in real time. Pinpoint what your website visitors do and when they do it. Trackaview installs on your own server so there are absolutely no recurring fees.
jsIRC is written using Socket.IO, node.js, jQuery Title Alert and Sencha ExtJS, relying on string.js, Lo-Dash and PhantomJS.
bIRC is a simple, lightweight and flexible IRC-Client written in Bash. bIRC doesn't require an installation and can be launched by executing a single script file. bIRC has plugin support and can be easily modified.
ThunderbirdandPidgin
Nettalk is a powerful but easy to use free (open source) IRC-client for Windows. The smart user interface is based on Windows standards, so it is easy to get used to it. The following languages for the interface are available: English, Spanish, Dutch, Russian, Chinese, Hungarian...
leafChat is an IRC client for Windows, Mac OS X, and Linux.
Chat with your friends using popular IRC networks. leafChat has a friendly, clean interface that doesn't get in the way of your conversations. Connect to multiple servers at once on the same screen, so that it'.
Thunderbirdand
SeaMonkey
CGI:IRC is a Perl/CGI program that lets you access IRC from a web browser, it is designed to be flexible and has many uses such as an IRC gateway for an IRC network, a chat-room for a website or to access IRC when stuck behind a restrictive firewall.
WebIRC runs as a server and is always connected to your favorite IRC networks. Seamlessly open the same session from home, work, and your mobile devices to continue exactly where you left off.
It uses the Tox protocol which is Peer to Peer, it will have a higher battery usage than other Messenger apps.
