Alternatives to R&Q for all platforms with Open Source 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 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

1437 Like
Conversations

Conversations is a privacy focused, open source XMPP Texting [Jabber] client for Android 4.0+ smart phones with wife-approved easy encryption [OTR, OMEMO, or GPG]. ...

Free Open Source Android Android Tablet
Decentralized End-to-end encryption Encrypted chat Picture sharing ... Encrypted Connection Chat Bot Group chat Group Messaging Self destructing messages File upload OTR Public groups chat Add a feature

49 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 Multiple protocols OTR ... Supports XMPP Tabbed interface Support for Themes Add a feature

329 Like
Zulip

Zulip is a group chat app. Its most distinctive characteristic is that messages are threaded by topic, helping you have long-running, organized conversations....

Free Open Source Mac Windows Linux Web Android ... iPhone Android Tablet BSD Self-Hosted
Threaded Conversations Group collaboration Chat Bot Community based ... GitHub integration Group chat Integrated File Sharing MarkDown support Team Collaboration Add a feature

116 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

224 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
Coccinella

Coccinella is a free and open-source cross-platform instant messaging client with a built-in whiteboard for improved collaboration with other people.

Free Open Source Mac Windows Linux BSD
Interactive Whiteboard Add a feature

16 Like
Messenger for Desktop

A simple & beautiful app for Facebook Messenger. Chat without distractions on any Operating System.

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

8 Like
- Bundleware Be careful during the installation: https://alternativeto.net/discussions/applications/11718/be-careful-in-the-installation/
MetroIRC

An IRC client for the Windows desktop which follows the Metro design guidelines.

Free Open Source Windows
No features added Add a feature

7 Like
qutIM

qutIM - free open-source multiprotocol ( ICQ, Jabber/GTalk/Ya.Online/LiveJournal.com, Mail.Ru, IRC ) instant messenger for Windows, Linux, MacOS X, OS/2, Symbian...

Free Open Source Mac OS X Windows Linux S60 BSD ... Haiku
Multiple protocols Add a feature

27 Like
- Discontinued The project seems to be no longer developed. Last versions for Windows, Mac, Linux and other platforms can be still downloaded from the official website.
Tinode

Open source instant messaging server and clients. Backend in pure Go (license GPL 3.0), client-side binding in Java for Android and Javascript (license Apache 2.0)...

Free Open Source Web Android Self-Hosted
Ad-free Group chat Real time collaboration Add a feature

2 Like
Zom

Zom's security and privacy features are powered by the amazing foundation created by the ChatSecure project, and works with other great apps like Conversations.

Free Open Source Android iPhone
Encrypted chat OTR Picture sharing Voice messages Add a feature

2 Like
Centericq

Centericq is a text mode menu- and window-driven IM interface that supports the ICQ2000, Yahoo!, AIM, IRC, MSN, Gadu-Gadu and Jabber protocols.

Free Open Source Mac OS X Windows Linux BSD
Built-in RSS reader Add a feature

1 Like
- Discontinued The program is no longer updated. Last version, 4.21.0, released in September 2005, can be still downloaded from the official website.

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Alternatives to R&Q for all platforms with Open Source License

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