Links

https://en.wikipedia.org/wiki/XMPP (XMPP wikipedia page)
https://xmpp.org/
https://www.freie-messenger.de/en/xmpp/ (interesting overview of XMPP)
https://xmppnetwork.goodbytes.im/ (graphical visualization of many XMPP servers)
https://xmpp.org/extensions/xep-0458.html (community code of conduct)
https://xmpp.org/extensions (XEPs list)
https://git.xmpp-it.net/explore/repos (git of italian xmpp community with many Free Software linked to xmpp)
https://xmpp.org/uses/instant-messaging/ (commercial software based on XMPP)
https://docs.modernxmpp.org/ (independent project to improve the quality of applications using XMPP, documentation aimed at helping programmers of XMPP applications)
https://wiki.jabberfr.org [FR] (a French wiki with a lot of outdated information and only some occasional new contributions)

https://migrate.modernxmpp.org/ (tool for migrate your account to another server)
https://search.jabber.network/ (search engine for public MUC)
https://compliance.conversations.im/ (allows you to understand which XEPs are supported by a specific server, what software is installed and its version)
https://connect.xmpp.net/ (service that allows you to check the connectivity status of an XMPP server)
https://xmpp.org/software/software-comparison/ (application that allows you to compare among all clients the various XEPs supported)

https://blog.prosody.im/great-invitations/ (article on invite-only registration servers and how to implement it in a prosody server)
https://cheogram.com/faq/ (nice guide on the Cheogram app)
https://fabionatali.com/posts/xmpp-self-hosting-tutorial/ (how to install and configure a Prosody server)
https://www.process-one.net/blog/hello-from-the-other-side-matrix-xmpp-via-ejabberd-25-03/ (guide on how to send direct messages between xmpp and Matrix via an Ejabberd server)
https://joinjabber.org/ (excellent guide to get started with xmpp)
https://contrapunctus.codeberg.page/the-quick-and-easy-guide-to-xmpp.html (nice guide on xmpp)

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