Alternatives to Jabiru for all platforms with any license

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 Windows Linux BSD PortableApps.com ... Xfce
Support for Multiple protocols Support for Multiple protocols Extensible by Plugins/Extensions Supports XMPP ... Multiple languages Multiple Account support Multiple chat protocols Portable Video calling Voice Call Add a feature

1446 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 Windows Linux Web Android ... BSD
Apps with End-to-End Encryption Group chat iPhone/iPod sync Support for Multiple protocols ... Multiple Account support OTR Video calling WebRTC Add a feature

280 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 Windows Linux Web Android ... iPhone Blackberry iPad
Facebook integration Support for Multiple protocols POP3 Support Team Collaboration Add a feature

270 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
Customizable Multiple languages Support for Multiple protocols OTR ... Supports XMPP Tabbed interface Support for Themes Add a feature

329 Like
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
Support for Multiple protocols Portable Add a feature

224 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...
- Discontinued Empathy is currently unmaintained. Last version, 3.25, released in August 2017, can be still downloaded from the official website.
Free Open Source Linux BSD
Integrated File Sharing Support for Multiple protocols Video calling Add a feature

154 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 Support for Multiple protocols ... Portable Add a feature

44 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 Windows Linux BSD Xfce
Encrypted chat Group chat Multiple languages OTR ... Supports XMPP Tabbed interface Video calling Add a feature

52 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...
- 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/
Free Open Source Windows
Support for Multiple protocols Add a feature

220 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 Texting Add a feature

42 Like
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 Windows Linux BSD
Supports XMPP 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

42 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 Linux Android BSD Xfce
Command line interface Extensible by Plugins/Extensions Modular System Support for Multiple protocols Add a feature

29 Like
YakYak

What does it do: * Send/receive chat messages * Create/change conversations (rename, add people) * Leave/delete conversation * Notifications * ...

Free Open Source Mac Windows Linux Hangouts
Portable Add a feature

17 Like
Disa

Disa is your new messaging hub. Conversations from different services can seamlessly be joined together, or disbanded within seconds.

Free Android Android Tablet Kindle Fire
Extensible by Plugins/Extensions Texting Unified messaging Add a feature

19 Like