Pidgin is a chat program which lets you log into accounts on multiple chat networks simultaneously. This means that you can be chatting with friends on XMPP and sitting in an IRC channel at the same time.
- Instant Messenger
- Free • Open Source
- Mac
- Windows
- Linux
- BSD
- Flathub
- PortableApps.com
+4Jitsi Desktop (previously SIP Communicator) is a legacy audio/video and chat communicator with full encryption, precedessor of Jitsi Meet .
- Video Calling App
- Free • Open Source
- Mac
- Windows
- Linux
- Online
- BSD
- Self-Hosted
+13Trillian 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 should be easily shared between all of your devices, not trapped as text messages on your phone.
- Instant Messenger
- Freemium • Proprietary
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Blackberry
- iPad
- Software as a Service (SaaS)
+2Psi is an XMPP client designed for experienced users. It is highly portable and runs on GNU/Linux, MS Windows, macOS, FreeBSD, NetBSD and Haiku.
- Instant Messenger
- Free • Open Source
- Mac
- Windows
- Linux
- BSD
- Haiku
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 services and do all your chatting within one application.
- Instant Messenger
- Free • Open Source
- Linux
- BSD
The goal of Gajim is to provide a full featured and easy to use XMPP client. Gajim works nicely with GNOME, but does not require it to run. It is released under the GNU General Public License.
- Instant Messenger
- Free • Open Source
- Mac
- Windows
- Linux
- BSD
- Xfce
- Flathub
ChatSecure is a free and open source messaging app that features OTR encryption over XMPP. You can connect to your existing accounts on Facebook or Google, create new accounts on public XMPP servers(including via Tor), or even connect to your own server for extra security.
- Instant Messenger
- Free • Open Source
- iPhone
- iPad
XMPP, or Extensible Messaging and Presence Protocol, is an open standard for instant messaging and real-time communication, allowing for message exchanges between any two entities on the Internet. It's known for its decentralized and extensible nature.
- Instant Messenger
- Free • Open Source
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Windows Phone
- Self-Hosted
A user-friendly messenger for everyone with a focus on privacy and freedom.
- Instant Messenger
- Free • Open Source
- Android
- F-Droid
A spin-off of the popular Jabber/XMPP client Conversations with automatic contact discovery.
- Instant Messenger
- Free • Open Source
- Android
Kaidan is a simple, user-friendly Jabber/XMPP client providing a modern user interface using Kirigami and QtQuick. The back-end of Kaidan is written in C++ using the QXmpp XMPP client library and Qt 5.
- Instant Messenger
- Free • Open Source
- Linux
- Android
- Ubuntu Touch
- Plasma Mobile
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.
- Instant Messenger
- Free • Open Source
- Windows
- PortableApps.com
Kopete is an instant messenger supporting AIM, ICQ, Jabber, Gadu-Gadu, Novell GroupWise Messenger, and more. It is designed to be a flexible and extensible multi-protocol system suitable for personal and enterprise use.
- Instant Messenger
- Free • Open Source
- Mac
- Linux
- BSD
Instantbird is an instant messaging client based on Mozilla XULRunner and the open source library libpurple created by the software developers of Pidgin . Over 250 add-ons allow user customization of, and addition of, features.
- Instant Messenger
- Free • Open Source
- Mac
- Windows
- Linux
- PortableApps.com
+6Kontalk is a secure instant messenger, allowing you to send and receive text, image and voice messages (other file types coming soon) to and from other Kontalk users completely free of charge.
- Instant Messenger
- Free • Open Source
- Android
- Self-Hosted