CommandGUI provides a clickable command interface for players to use. Players can bring up the menu by typing /menu or by clicking a book icon in their inventory. When players click on items in the menu(an inventory), it will execute the defined command in the configuration.
Watch the demonstration video below! (sorry about the suckish editing and video quality :P I'm new to making videos)
This is still a work in progress! The first release will come out soon :)
Stay up-to-date @ http://dev.bukkit.org/server-mods/commandgui/milestones