I found a Minecraft network project that is trying to bring back a classic style server setup. The goal is to have a hub that connects to different game modes so it feels like one big place.
It is planned to include factions and survival and prisons. The person making it has hosted SMP before but this time they want linked servers like a real network.
This is a big remake project and they are trying to get it finished by the end of the year.
Build a Multi Server Network Hub
GG.MINEWIND.NET New Server IPMonths Of Work Prison Remake
I found a prison server that has been worked on for months by the owner and a developer. They are trying to remake the prison style like TDKPrison.
It has custom plugins like a prison core and explosive picks. There is also a token shop and a shop for selling items.
The hub is made for 1.20.6 and it supports multiple versions too. They are asking players to join and give feedback.GG.MINEWIND.NET New Server IP