Pidgin Pidgin is an easy to use, multi-protocol chat client client used by millions. Connect to AIM, MSN, Yahoo, XMPP, and more chat networks all at once. It has built-in... Free Open Source Mac OS X Windows Linux BSD PortableApps.com ... Xfce Multiple protocols Multiple protocols support Extensible by Plugins/Extensions Supports XMPP ... Multiple languages Multiple Account support Multiple chat protocols Portable Video calling Voice Call Add a feature 1434 Like
Jitsi Jitsi (previously SIP Communicator) is an audio/video and chat communicator with full end-to-end encryption that supports protocols such as SIP, XMPP/Jabber, ICQ/AIM... Free Open Source Mac OS X Windows Linux Web Android ... BSD End-to-end encryption Group chat iPhone/iPod sync Multiple protocols ... Multiple Account support OTR Video calling WebRTC Add a feature 271 Like
Trillian Trillian is an instant messaging app that works on phones, tablets, and desktops while keeping your chats neatly synchronized between all of them! We think conversation... Freemium Mac OS X Windows Linux Web Android ... iPhone Blackberry iPad Facebook integration Multiple protocols POP3 Support Team Collaboration Add a feature 269 Like
Adium Adium is a free and open source instant messaging application for Mac OS X, written using Mac OS Xs Cocoa API, released under the GNU GPL and developed by the Adium... Free Open Source Mac OS X Customizable Multiple languages Multiple protocols OTR ... Tabbed interface Support for Themes Add a feature 329 Like
Empathy Empathy is a messaging program which supports text, voice, video chat, and file transfers over many different protocols. You can tell it about your accounts on all those... Free Open Source Linux BSD Built-in File transfer Multiple protocols Video calling Add a feature 154 Like Discontinued Empathy is currently unmaintained. Last version, 3.25, released in August 2017, can be still downloaded from the official website.
Miranda IM Miranda IM is the smaller, faster, easier instant messenger with support for multiple protocols. Designed from the ground-up to be resource efficient while still... Free Open Source Windows PortableApps.com Multiple protocols Portable Add a feature 223 Like
Miranda NG Miranda New Generation is a successor of a popular multi-protocol instant messaging client for Windows - Miranda IM . Very light on system resources and extremely fast. Free Open Source Windows PortableApps.com Customizable Extensible by Plugins/Extensions Multiple languages Multiple protocols ... Multiple protocols support Portable Add a feature 43 Like
Gajim The goal of Gajim is to provide a full featured and easy to use Jabber client. Gajim works nicely with GNOME, but does not require it to run. It is released under the... Free Open Source Mac OS X Windows Linux BSD Xfce Encrypted chat Group chat Multiple languages OTR ... Supports XMPP Tabbed interface Video calling Add a feature 51 Like
Digsby Digsby is a multiprotocol IM client that lets you chat with all your friends on AIM, MSN, Yahoo, ICQ, Google Talk, and Jabber with one simple to manage buddy list. Its... Free Open Source Windows Multiple protocols Add a feature 219 Like Discontinued The application is not developed actively anymore. The source code has been made open for the community to take over but that didn't make any impact: https://github.com/ifwe/digsby | https://web.archive.org/web/20121205002331/http://blog.digsby.com/archives/1969/
Psi Psi is an instant messaging application for Windows, Linux, and Mac OS X that connects to the free, open XMPP network. Localized versions of Psi are available in... Free Open Source Mac OS X Windows Linux BSD No features added Add a feature 77 Like
Xabber Open source Jabber (XMPP) client with multi-account support, clean and simple interface. Being both free (as in freedom!) and ad-free, Xabber is designed to be the best... Free Open Source Android Encrypted chat Add a feature 41 Like
iMessage Love iMessage on your iPhone? You'll love it on your Mac, too. Messages lets you send unlimited messages to anyone on a Mac, iOS device, or Apple Watch. Your... Free Mac iPhone iPad Apple Watch Encrypted chat Group Messaging Add a feature 40 Like
YakYak What does it do: * Send/receive chat messages * Create/change conversations (rename, add people) * Leave/delete conversation * Notifications * ... Free Open Source Mac OS X Windows Linux Hangouts Portable Add a feature 17 Like
WeeChat WeeChat is a fast, light and extensible chat client. It runs on many platforms (including Linux, BSD and Mac OS). WeeChat is: - modular: a lightweight core with... Free Open Source Mac OS X Linux Android BSD Xfce Command line interface Extensible by Plugins/Extensions Modular System Multiple protocols Add a feature 27 Like
Spark 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... Free Open Source Mac OS X Windows Linux Self-Hosted Extensible by Plugins/Extensions Group chat Tabbed interface Add a feature 30 Like
