Develops and maintains the XMPP standard for instant messaging and voice and video calls. It’s a free open federated standard, so anyone can set up their own server or write their own app. (XMPP used to be known as Jabber.)
Private company which develops free open software for instant messaging through XMPP. They have a number of XMPP projects including server software and apps for MacOS (Beagle), iOS (Siskin) and Android (Stork).
Free open source XMPP desktop app for Linux, Mac and Windows. Includes OMEMO end-to-end encryption support.
Informal collective promoting the use of XMPP/Jabber messaging. They run a non-technical website, also called JoinJabber, which helps people sign up on XMPP and includes advice on apps and servers.
A co-operative organisation creating Go-based resources for the XMPP instant messaging protocol.
Free open source software for running XMPP instant messaging servers, and one of the most popular ways to set up an XMPP server.
Free open source encrypted XMPP app for Android produced alongside a member-funded XMPP service, currently in private beta testing. Developed and run by a co-operative based in India.
The popular free open source desktop email app, available for Linux, Mac and Windows. As well as email, it also works as an RSS news reader, XMPP client and IRC client.
Fediverse account (main):
Fediverse account (videos):
Free open source XMPP/Jabber app for Linux which includes support for end to end encrypted messaging, voice/video calls and conferencing.
Free open source XMPP messenger app for iPhone, iPad and Mac. It includes support for OMEMO end-to-end encryption.
Free open source XMPP app for Linux and Android, and part of the KDE project. Includes OMEMO support for end-to-end encryption.
XMPP-based free open federated messenger project. It aims to make XMPP into a more viable alternative to Whatsapp etc by providing consistency in design and terminology, while still maintaining compatibility with other XMPP apps and servers. (It’s a similar plan to how Mastodon made ActivityPub more mainstream while still being compatible with other ActivityPub server types.)
Website featuring a curated list of XMPP instances organised into categories based on the quality and type of services offered.