Bukkit

Pre-generates chunks, quickly, efficiently, and safely

A Skyblock Plugin

The multiworld plugin made by ferrybig

This plugin allow full control of normal world generator

Creates Hunger Games styled arenas and gameplay

A plugin for Bukkit based Minecraft server that adds a floating island dimension similar to the old skylands.

PlotSquared

Survive hordes of zombies as night stretches forever on

Adds many new items to the game - from OPItems to utilities

Provides automated plots with protection (MultiWorld support)

IslandWorld - Survive on small isle

SkyBukkit seamlessly brings SkyBlock to Bukkit servers.

Server-side survival expansion with smarter tools, custom bows, special items, Recall, and Moon and Sky dimensions.

CityWorld

for use with InfinitePlots and WorldGuard, creates regions automatically for new players

uSkyBlock

Exotic Garden

RpgEssentials

Floating island based world generation

A World-Generation Plugin that creates and manages space worlds.