*** Version 1.34 ***
I haven't seen a tool that edits egg moves yet, so I decided to make my own. Please try it out and tell me how it works for you.
Since it seems that some people don't realize what this program does, i'll quote what I said in a post further down the page:
Each line in the listbox that the program shows after you load a rom is an entry in the list of egg moves of that rom. All the moves below a name in the list until the next name are egg moves of that pokemon. The names of moves are indented to the right, while those of pokemon are not.
Right now it supports all english and french generation 3 games (FireRed, LeafGreen, Ruby, Sapphire, Emerald), and I'm willing to add support for other languages if the offsets of the Pokemon names, move names, and egg moves are provided to me. Contact me via PM or email for information on how to do so.