Kopete is an instant messenger supporting AIM, ICQ, Jabber, Gadu-Gadu, Novell GroupWise Messenger, and more. It is designed to be a flexible and extensible multi-protocol system suitable for personal and enterprise use.

Tkabber is described as 'Free and Open Source client for the Jabber instant messaging system. Its writen in Tcl/Tk, and works on many platforms (tested on Linux, FreeBSD, NetBSD, Solaris, MacOS X and Windows 98/2000/XP)' and is a instant messenger in the social & communications category. There are more than 50 alternatives to Tkabber for a variety of platforms, including Mac, Android, Windows, Linux and iPhone apps. The best Tkabber alternative is Pidgin, which is both free and Open Source. Other great apps like Tkabber are WhatsApp, Wire, Zulip and Conversations.
Kopete is an instant messenger supporting AIM, ICQ, Jabber, Gadu-Gadu, Novell GroupWise Messenger, and more. It is designed to be a flexible and extensible multi-protocol system suitable for personal and enterprise use.

Video conversations with up to 8 people in your browser - no downloads, no login. Just name your channel and you are on. Works in all modern browsers, even mobile.





Monal is an open source iOS and macOS XMPP Chat-Client. It can connect to any standard XMPP chat server such as Gtalk or Facebook chat.



Chat on the Jabber network (XMPP protocol); focus on features for gateway users The Cheogram Android app allows you to join a worldwide communication network.






Fully open source instant messaging server and clients. No proprietary components or non-free dependencies. Backend in pure Go (GPL 3.0), with a command-line administration tool in python + gRPC. Clients for Android, iPhone, and Web - ReactJS (all licensed under Apache 2.0).




One app for all your messaging.
WhatsApp, Messenger, Telegram, Skype, Zoom, Google Hangouts, Gmail, Slack, Facebook, Facebook Pages, Instagram, Twitter, Outlook, SnapMap, WeChat, LinkedIn, HipChat, and ChatWork.




Offers free global video and voice calling, group chat with up to 50 participants, in-app messaging that bypasses SMS plans, music clip sharing via Spotify, photo editing, gaming and gifts, animated messages, mini-games during calls, and centralized media gallery.




Spark is an Open Source, cross-platform IM client optimized for businesses and organizations. It features built-in support for group chat, telephony integration, and strong security. It also offers a great end-user experience with features like in-line spell checking, group chat...








On-Meet is a free video conferencing platform that allows you to share your knowledge with your friends, colleagues and family.



