Northwoods is a survival multiplayer server on 1.21.11 that keeps the vanilla feel but adds a few plugins to make it deeper.
It started as a small world for the owner and their wife and then they decided to open it up for more players.
You can build towns with Towny and use Towny chat. There are shopkeepers for trading and SimpleJobs for extra goals. The world uses a custom terrain generator and the mobs can level up so exploring and fighting stays interesting. There is also Distant Horizon support.

