Self-hosting
Self-hosting is really nice
KNET
Using nginx. The limitations and uses are similar to your average static web host
Ejabberd
Nobody uses it but XMPP is just too cool to not have a server
Yggdrasil
The Yggdrasil network is a project for a decentralized routing protocol and has encryption in the routing layer, something that the Internet protocol doesn't have
http://[200:45a5:613c:8758:802a:5d1a:ae48:64c5]
The browser's secutity warning is a lie if using Yggdrasil
PeerTube
PeerTube is a self-hosted alternative to YouTube. It's connected to the Fediverse network, so it has the same premise as XMPP and EMAIL
Postfix + Dovecot
Postfix and Dovecot (and some others) are EMAIL servers
Forgejo
Forgejo is a sef-hosted alternative to GitHub. It's goal is to be connected to the Fediverse network, though it isn't yet. Forgejo is what runs on Codeberg
Sharkey
Is an alternative to centralized social media that is connected to the Fediverse network