Things like Freenet or ipfs where your node doesn’t provide just networking but also storage.
Could be too obvious to mention here but a fediverse instance of some sort, lots of different software you can run besides the usual suspects like Mastodon or Lemmy/Kbin ranging from the more niche microblog platforms like Misskey forks (writing this on a Sharkey instance) to things like Bookwyrm for tracking your reading habits and connecting with other book lovers.
Distributed computing like distributed.net or Folding at Home.
Haiku is really very different from what Linux used to be, it’s single user with one mandatory GUI and lots of fairly interesting features from BeOS. Not saying this to discourage anyone from using it, I quite like it, but Linux is Linux and Haiku is Haiku.
@technology@lemmy.world @oberstoffensichtlich@feddit.org