High performance Spigot fork that aims to fix gameplay and mechanics inconsistencies https://papermc.io/

bukkitcraftbukkithacktoberfestjavaminecraftminecraft-apiminecraft-performanceminecraft-serverpaperpaper-apipapermcspigot-forktacos

CraftBukkit/Spigot f6d4eae5c3 Allow unloading all worlds except the main one ... By: md_5 <git@md-5.net>		2017-12-16 10:19:00 +11:00
paper-server	Allow unloading all worlds except the main one	2017-12-16 10:19:00 +11:00