I found the archive on Expert Cartridge - ReplayResources (pokefinder.org) Are there more programs more this? They all seem simular
I'm sure there are many other utilities.
Most of the hackers in this time had an expert cartridge and made new tools or modifies existing.
But most of this code was written for one purpose (to hack a specific software or game).
And most of this code are not usable for others, no documentation and difficult handling.