Alternatives to Miranda NG 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

1445 Like
Facebook Messenger

Facebook Messenger is a faster way to message. Reach friends right on their phones, get and send messages fast, message everyone at once and more. Top Features: •...

Free Windows Web Android iPhone Blackberry ... Windows S Android Tablet Windows Phone iPad Apple Watch Android Wear
Group chat In-app Money Transfer Supports archiving conversations Video calling ... Voice Call Add a feature

199 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...
- Miranda IM is the direct antecedent of Miranda NG Guest • Jun 2015
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
ICQ

ICQ is one of the oldest instant messengers. First developed by the Israeli company Mirabilis, sold to AOL, sold again and currenly owned by the Russian...

Free Mac Windows Linux Web Windows Mobile ... Android iPhone Java Mobile S60 Blackberry Android Tablet Windows Phone iPad Kindle Fire
Web-Based Add a feature

64 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
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
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
Caprine

Caprine is an unofficial and privacy focused Facebook Messenger app with many useful features.

Free Open Source Mac Windows Linux
No features added Add a feature

6 Like
Kopete

Kopete is an instant messenger supporting AIM, ICQ, MSN, Yahoo, Jabber, IRC, Gadu-Gadu, Novell GroupWise Messenger, and more. It is designed to be a flexible and...

Free Open Source Mac Linux BSD
No features added Add a feature

68 Like
Tencent QQ

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...

Free Mac Windows Android iPhone Android Tablet ... Windows Phone iPad Facebook
Multiple languages Add a feature

24 Like
Messenger Lite

Messenger Lite is a fast and data-efficient messaging app to reach the people in your life. Installs quickly. It's less than 10MB to install, saving storage space...

Free Android Android Tablet
Group chat Lightweight Stickers Voice Call Add a feature

5 Like
Kadu

Kadu is an open source Jabber/XMPP and Gadu-Gadu instant messenger client for Linux, *BSD, Mac and Windows.

Free Open Source Mac Windows Linux BSD
No features added Add a feature

18 Like