Welcome to nobuildersnotools, one of the first (if not the first) PROPERLY RAN, PROPERLY SETUP, AND TRUE EAGLERCRAFT ANARCHY SERVER WITH A GOOD ADMIN.
noBnoT runs on the latest version of Minecraft Java, 1.21.8 (as of this writing). It supports all versions from 1.7.x-1.21.x (and eaglercraft, obviously) and is cracked.
If you want to see all the new mobs, blocks, and items in their true form however, you will need to join on Java Edition with the IP below.
EAGLERCRAFT IP: wss://eagler.noBnoT.org
Java IP: noBnoT.org
This Eaglercraft anarchy server is like 2b2t in that there are absolutely no rules, no bans, no mutes, no nothing. Hacks are freely allowed, although there is a very light anticheat to prevent game-breaking exploits. Do whatever you want - fight, grief, build, destroy, whatever - it's freely allowed here. Be yourself.
1.12.2 is the recomended version due to it being far more up to date and thus having less bugs on a modern server.
Use WASM-GC if possible. If you encounter issues, switch to JS.
More well tested, and can perform better in some scenarios versus 1.12.2.
However, being out of date, it has far more bugs on modern servers compared to 1.12.2