EngineHub / WorldEdit

🗺️ Minecraft map editor and mod

EngineHub / WorldGuard

🛡️ Protect your Minecraft server and lets players claim areas

IntellectualSites / FastAsyncWorldEdit

Blazingly fast world manipulation for artists, builders and everyone else.

chengmarc / minecraft-citygen

MC CityGen: Turn your own Minecraft builds into an entire city.