Bukkit

Chat Channel Systems for Bukkit Servers.

Running Towny? Allow users to broadcast that they need a town to join

A plugin to use groups, diffrent syntaxsses, priavte chatas, group chats and so on...

Cross-server Minecraft Mail

A fully customizable essentials plugin, to help your server appear as professional as possible!

Define your own join and quit messages with colors, groups and chatnames. (Prefix and Suffix, too!)

RealMotd

MultiLanguage

Allows you to create a tutorial for your players to follow

Handles player status and chat removal

MessageFilter

Chat formatter

Password authentication for offline servers (1.14 onwards!)

SuperChat

An easier way to change groups/ranks. [PermissionsEx]

SimplyConnect

Change your chat!

This plugin is a plugin which displays hp when using a bow and a fishing rod

A (hopefully) expanded-feature DnD plugin

A multi-channel chat-system. Can be used as an open-source, and more light-weight alternative to plugins like Herochat.