Multiverse-Core Plugin (1.19, 1.18.2) – Bukkit, Spigot, Paper - 9Minecraft.Net
Per world Inventory plugin - Addons - Minehut Forums
Multiverse Inventories PLUGIN TUTORIAL | Per World Inventories - YouTube
Multiverse-Core] Disable Plugin Per World | SpigotMC - High Performance Minecraft
PerWorldTablist Plugin (1.12.2) – Bukkit, Spigot, Paper - 9Minecraft.Net
GitHub - cyberkitsune/KitsuneChat: A custom chat plugin for minecraft. Supports per world, channels, local, and admin chat. Uses prefixes rather than commands.