Not the greatest name I know but I needed something to quickly encode or decode URLs escaped with percent symbols (eg. %27 = apostrophe). Mostly used for quickly checking against SQL-injection. Hope it's of some use to you.
Currently little documentation as I'm unsure of the interest (only ever downloaded about 15 times). The module serves my purpose (analyse sql-injection codes or convert for MS-DOS batch programs). If it's of some use to you, I'd love to hear about how it's used - just add a comment anonymously or as a logged-in member at the bottom of this article.