goodTools was pretty much the precursor to romcenter or clrmamepro.
It's a DOS based program that scans your roms and lets you know which ones are bad and does all the renaming and moving for you.
Being a DOS app, people were afraid of it, so the .dat files that were used by the program were getting converted to romcenter files for quite awhile, until the guy behind goodTools decided (the hypocrisy of this is unbelievable) that the information contained in his .dat files is proprietary and copyrighted and no one beside him could use it, so no more romcenter .dat files from converted goodTools .dats.
However, there is absolutely nothing stopping someone from taking a set of A2600 roms, running good tools on it, putting together a complete set, and then having clrmamepro generate a new .dat file off that collection. No violation of Mr. GoodTool's database at all, just a collection of names and CRCs in a text file.
Now, I don't want to dis Mr GoodTools too much-he's put a lot of work into cataloging and organizing ROMs. I think perhaps a little too much work-I think he cracked.
-jeff!