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If you also want to host or build interesting social apps, you should definitely do an isolated atproto / Bluesky service! https://blueskydirectory.com/ As for actually doing this... running a PDS and relay isn't that hard, and the red dwarf web client is online and can be configured to point to whatever appview you want. There's significantly less experience running your own appview, but there are options & folks ar…
I’ve used bluesky, and it’s very twitter-like. That doesn’t seem like the best model for a close-knit community. For larger ones, perhaps!
I linked you a directory of apps already! You could use any of these! You'd have to set up your own instances to use it on a private service but that's doable, and since you'd have the main atproto systems up, it would be much lower lift than you might expect!
PDSls let's you browse people's PDS. This shows you what apps I've used! It's quite versatile, capable of hosting all manner of social systems. There's nothing else that will give you the ability to build a neat rich social community like this: everything else has specific purpose and intent, and you are rather stuck with that design, but atproto is versatile and generic and ready to form whatever kind of social systems you want with it. To look at what's here and say atproto is very twitter like is to barely scratch the surface. https://pdsls.dev/at://jauntywk.bsky.social