Toms3 is an anarchy server that is trying to be a real long term alternative to servers like 2b2t. It is cracked and it is back again with a brand new world after being around years ago. The whole point is no admins and no rules so you can play however you want.
It stays close to vanilla and only changes stuff to keep things stable. There is no tpa and no home commands so you actually have to travel and survive. It also has a separate authentication server and premium players can skip the auth.
Cheats are allowed and the anti cheat is relaxed. Things like ElytraFly AntiKnockback Velocity and NoFall are said to work but straight up flight is blocked. Chat is made to feel like 2b2t with greentext plus whisper and reply and ignore.
There are currently two dupes known including an item frame dupe and a donkey dupe for 1.15.2. The server is meant to keep running and if it ever shuts down they said a full world download will be released. It started for Spanish speakers but it has been translated almost fully into English so anyone can join.
