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
NeoChat is a client for Matrix, the decentralized communication protocol for instant messaging. It is a fork of Spectral, using KDE frameworks, most notably Kirigami, KConfig and KI18n.
- Instant Messenger
- Free • Open Source
- Mac
- Windows
- Linux
- Android
- KDE
- Matrix.org
- Flathub
+4Apple’s messaging network has gained a lot of popularity in recent years, though it has long been locked down to their platforms. But now, AirMessage makes it easy to send and receive messages to your friends and family through group chats, images, videos and audio messages!
- Instant Messenger
- Free • Open Source
- Online
- Android
- Android Tablet
- Self-Hosted
- Apple Messages
Ekiga (formerly known as GnomeMeeting) is an open source SoftPhone, Video Conferencing and Instant Messenger application over the Internet. It supports HD sound quality and video up to DVD size and quality.
- Video Calling App
- Free • Open Source
- Windows
- Linux
+2Chat 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 popular mobile platforms.
The widest selection of unique features that you won't find in any other IM client!.
- Instant Messenger
- Freemium • Proprietary
- Online
- Windows Mobile
- Android
- iPhone
- Java Mobile
- Symbian S60
- HP webOS
- Blackberry
- Android Tablet
- Windows Phone
- iPad
- Kindle Fire
+6Handcent SMS is a free enhanced SMS and MMS application for Android.
- Instant Messenger
- Freemium • Proprietary
- Android
- Android Wear
The most secure and anonymous messenger, encrypted with Blockchain.
- Instant Messenger
- Free • Open Source
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Android Tablet
- iPad
[Polish only]
Comfortable and minimalistic multi-messenger. Allows you to communicate via XMPP, tlen and gadu-gadu protocol. Features avatars on every protocol. Develops in very quick way. Doesn't support emoticons, sounds and advertisements :) Although you can add features.
- Instant Messenger
- Free • Proprietary
- Windows
kChat is a secure instant messaging for businesses, which makes it possible to discuss matters live and organise projects.
- Group Chat App
- Paid • Proprietary
- Mac
- Windows
- Online
- Android
- iPhone
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
Ricochet Refresh is the new updated version of Ricochet, supported by Blueprint for Free Speech.. We are a non-government, not-for-profit organisation working to safeguard the freedom of expression for whistleblowers, activists, and everybody else, worldwide.
- Instant Messenger
- Free • Open Source
- Windows
- Mac
- Linux
Quaternion is a cross-platform Qt5-based desktop IM client for Matrix, a reference desktop application using libQMatrixClient. Source code, issue tracker, roadmap etc. can be found at GitHub. Releases (with links to cross-platform source code archives, as well as binaries for...
- Instant Messenger
- Free • Open Source
- Mac
- Windows
- Linux
- Flathub
- Flatpak
- +3
A tiny self-hosted federated messenger for the decentralized web.
- Instant Messenger
- Free • Open Source
- Android
- iPhone
- Android Tablet
- iPad
- Self-Hosted
- F-Droid