https://web.archive.org/web/20210625201040/https://wiki.404.city/en/XMPP_vs_Matrix https://web.archive.org/web/20210625201040/https://wiki.404.... For future r

https://web.archive.org/web/20210625201040/https://wiki.404.city/en/XMPP_vs_Matrix https://web.archive.org/web/20210625201040/https://wiki.404.... For future reference as a backup in case page is taken down