I just finished to write a new 3rd party tool named RecipeEditor. As its name indicates, it's dedicated to tradeskills. That tool is pretty easy to use. Use the search facilities to find the recipes (by id/name/skill), right clicking them will open an editor, modify what you have to modify, and press Update once done.
you can also add / remove recipes.
I added 10 configurable buttons that can fasten the design process, you can assign them items from your DB. Pressing one of them will set that item as a component of the recipe.
Don't hesitate to post bugs/requests, i ll be happy to answer and correct everything needed!
link :
http://alexis.vilvert.free.fr/eqemu/recipeeditor.html
[updates]
12/30/2003 : version 1.0