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 Multiple languages ... Multiple Account support Multiple chat protocols Portable Supports XMPP Video calling Voice Call Add a feature 1431 Like
Hangouts Hangouts is a messaging app that lets you send and receive messages, photos and more, and even start free video and voice calls – one to one or with a group! ... Free Windows Web Android iPhone Chrome OS ... Android Tablet iPad Chrome Android Wear Gmail integration Group chat Multi Device Support Texting ... Voice Call Voice messages WebRTC Add a feature 936 Like
appear.in 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. Freemium Windows Web Android iPhone Chrome OS ... Android Tablet iPad Anonymity Anonymous email Group chat No installation ... No registration required Stickers WebRTC Add a feature 62 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.
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 OS X Windows Linux Web Android ... iPhone 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 109 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 Multiple protocols Portable Add a feature 222 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
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
Movim Our philosophy is that your data are yours and you must always be in control. Movim achieves this through a complete decentralisation of users' data and accounts. ... Free Open Source Web No features added Add a feature 33 Like
IM+ Chat everywhere! IM+ is the most widely used mobile IM app! Connect all-in-one to MSN, Yahoo!, Google Talk, AIM, Jabber, ICQ, Facebook, MySpace and Twitter on ALL... Freemium Web Windows Mobile Android iPhone Java Mobile ... S60 HP webOS Blackberry Android Tablet Windows Phone iPad Kindle Fire Multiple Account support Multiple protocols support Add a feature 102 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
Instantbird Instantbird is an instant messaging client based on Mozilla XULRunner and the open source library libpurple created by the software developers of... Free Open Source Mac OS X Windows Linux PortableApps.com Multiple languages Multiple protocols Portable Add a feature 40 Like Discontinued Site last updated 2013. Site security certificate expired April 2017.
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 OS X Windows Linux BSD No features added Add a feature 16 Like
Tkabber Tkabber is a 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... Free Open Source Mac OS X Windows Linux BSD No features added Add a feature 12 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/
