social.dk-libre.fr is a Fediverse instance that uses the ActivityPub protocol. In other words, users at this host can communicate with people that use software like Mastodon, Pleroma, Friendica, etc. all around the world.
This server runs the snac software and there is no automatic sign-up process.
The real skill is understanding a problem well enough to make the solution simpler. KISS.
Niklaus Wirth was writing about this over 30 years ago:
https://cr.yp.to/bib/1995/wirth.pdf
Looking at today's software, what projects do you think have become unnecessarily complex?
systemd comes to mind for me. What else?
Je suis en trains de tester #starling de @df et franchement, je suis bluffé. J'ai vu quelque petit bug, mais c'est fonctionnel et léger. C'est très prometteur comme projet. 😁
https://github.com/dfaria-eu/Starling/
J'en dirais davantage après quelques tests supplémentaires ...