General - a plugin for basic administrator commands
This project is now ABANDONED. However, if anyone wants to take it over, feel free to contact me either through PMs here or in the IRC at #bukkitdev (on irc.esper.net), and I'll hand over ownership of the project. Additionally, you can fork this project on github if you intend to take over.
Download:
General provides a small set of basic administrative commands for your server, such as /give, /weather, and /time.
I recommend using sk89q's CommandHelper in conjunction with this plugin. Starting from 3.4.5, there is a command-helper.txt file included with the download which you can copy to CommandHelper's config.txt for some handy aliases, such as /spawn and /home.

