SimpleSignEdit

Not satisfied with the mechanics of other sign edit tools, such as requiring the use of commands, I went and threw together a plugin that lets you edit signs simply by right-clicking them with another sign in hand.

How to use it
When you right-click to edit a sign, you can then view and edit the text of the sign just as you would when creating it. You can only edit signs if you are the owner or if they are owned by everyone. To include colours on the sign, use the & character followed by a digit or a letter from A to F. This works both when placing and when editing. If you want to include an & character on the sign, and the plugin interprets it as a colour code, simply double it and the plugin will realize that you don't want it to be converted.

To see who owns a sign, hold a stick in your hand (you can change this to any item in the config file), and right-click the sign. To change who owns a sign if you have permission, hold a feather in your hand (you can change this to any item in the config file), and right-click the sign. Then either type the new owner name into chat, or walk over and punch them. You can also enter the symbols @, #, and * into chat to set the owner to yourself, no-one, or everyone, respectively. You could also edit ownership by editing the config file, but since signs are stored by their location that would not be an easy task.

Video Tutorial
thumb|300px|left|SimpleSignEdit tutorial