Complex sentence: Unlike editing RedBook, both authors Jean-Marc Pinaud and Guy-Franck Richard did not remain anonymous and offer to download their version on their site that propels their online campaign called Galapiat.
Split into simpler sentences: Unlike editing RedBook, both authors Jean-Marc Pinaud and Guy-Franck Richard did not remain anonymous. They offer to download these version on the website that propels their online campaign called Galapiat.