Bukkit

Tablist

Dynamic web-based maps of your Bukkit/Spigot server

Open anyone's inventory as a chest in real time!

Provides essential server managment tools: World autosave, Backups, Auto restart, Plugin data purging, Plugin management and more.

Detect and fight the exploitation of various flaws/bugs in Minecraft!

Grief Prevention

Provides automated plots with protection (MultiWorld support)

Add prefixes and suffixes with the 1.5 Scoreboards!

Schedule configurable server wide broadcasts easily

The banning plugin that does everything. Properly.

Custom Join Items

Change the colour of the server chat!

PowerRanks

BukkitGUI - the most downloaded GUI for bukkit and any other server

LoginSecurity

Lockette v1.4 - Simple chest and door lock, no databases!

KitAdder

MyCommand

CoreProtect

Expand the capabilities of Skript with skRayFall