*New Plugin* Config Constants
Most people never need to edit the WordPress constants in wp-config.php but if you do then up until now there was no alternative but to edit the file manually.
However, the Config Constants Plugin changes this by allowing you to modify a select set of WordPress constants directly from the WordPress admin!
The Plugin options page looks like this:
You can only modify constants that are already defined in wp-cofig.php so you remain in full control of your configuration file at all times.