Bukkit

ChatTools+ is a plugin which allows you to have a better control on the chat.You can disable and enable the chat, or enable or disable the chatlog mode(if the chatlog mode is enabled, all things says by players will be writted in a file).
When the chat is disabled, only ops and players who have the right permission will can chat.

Version 1.2.501:
Commands:
/chat - Print ChatTools' help.
/chat.toggle.on - Toggle the chat enabled(enabled by default).
/chat.toggle.off - Toggle the chat disabled.
/chat.log.on - Enable the chatlog mode(disabled by default).
/chat.log.off - Disable the chatlog mode.
/chat.shutdown - Shutdown ChatTools.
/chat.reload - Reload ChatTools.

Permissions:
chattools.all - Allow access to all ChatTools' commands.
chattools.reload - Allow access to /chat.reload
chattools.shutdown - Allow access to /chat.shutdown
chattools.bypass - Allow the player to chat instead it's closed.
chattools.log.off - Allow access to /chat.log.off
chattools.log.on - Allow access to /chat.log.on
chattools.toggle.off - Allow access to /chat.toggle.off
chattools.toggle.on - Allow access to /chat.toggle.on
chattools.help - Allow access to /chat

Configuration:
For config messages when the chat is enabled | disabled, go to the ChatToolsPlus folder, in the conf folder and open the right file(when-chat-disabled or when-chat-enabled)and write the message you want to cast.

Version 1.2.502:
new commands:
none

new permissions:
none

other news:
A bug with the logmode has been corrected.

Version 1.2.503:
new commands:
none

new permissions:
none

others news:
Bugs correcteds.

Version 1.2.504:
new commands:
/chat.flush - Flush the chatlog.

new permissions:
chattools.flush - Allow access to /chat.flush

other news:
Added a line space at each restart in the chatlog.

Version 1.2.505-runs for 1.3.1/1.3.2 too:
new commands:
none

new permissions:
none

other news:
Disallow players who aren't ops or haven't permission "chattools.bypass" or "chattools.all" to use /me command.