Bukkit

AdvancedBan provides advanced kick- ban- and tempban-messages

Join Message Plus allows you to change or turn off the join and quit messages of Minecraft.

Show a picture of your player's head in chat when they join! Very configurable.

BossShop allows you to create custom "GUI-Shops"

Simple & Effective Staff Utility To Freeze Players! [Very Customizable] When player's give you lemons, freeze them & make Ice Lemon Tea!

Play Custom sounds when a player joins/leaves/talks/dies or respawns

Best MOTD plugin, that will make ur server look SEXY!

[CTSNC] ★ Animated Scoreboard and Tablist, NameTag, Chat, ... ★ [Protocol Hack] [1.8 - 1.11]

SpawnJoin

allows you to see commands being used by other users.

The official InventorySee plugin by TehCoderHD!

Lets ops keep tallys on servers

The best chat channel plugin in Minecraft!

Player time on server tracking, with in game 'top player' lists, file based reports, and more.

ChatManager+

An advanced vote listener with many features

Gather statistics for your server such as playtime, blocks broken and pvp!

You like to be one like the big ones? With a really nice Animated Scoreboard? Than use this plugin!

ServerInfo

Cutting trees more realistic.