Discology a famous disc utility package by Meridien Informatique.
Especially known for it's ability to copy copyprotected software with it's very powerful disc copier.
The english version is from Siren Software.
Discology will use any extra RAM that you have connected.
It supports both Dk'Tronics and Vortex compatible RAM.
There are many versions of Discology, The last is 6.0+ and is the unique for the CPC plus range.
There is an english version too.
A version of Discology was also avaliable on ROM.