FediHood is a social network built around the place where you live. You choose a city and the topics you care about, then read what neighbours are saying and join in.
It stays a normal fediverse app. Your posts can reach Mastodon, PixelFed, Misskey and the rest, and posts from those servers reach you too.
Source code: https://git.holos.social/tom79/FediHood
There’s only one instance so far: https://fedihood.social/
If new instances are created, they should show up here: https://fedihood.fediverse.observer/list
Yes, but there’s no ability to search for users yet. So I guess you have to tag them or message them before you can follow them, or maybe if they follow you first