Jean-Loup Gailly

Jean-Loup Gailly is a French Go player who, among other things, has started the Go Teaching Ladder, a thriving reviewing website, which has now gone to sleep.

He has a homepage about Go: http://gailly.net/go.html

Besides Go, he's a computer programmer and author of world wide used tools such as gzip. See https://en.wikipedia.org/wiki/Jean-loup_Gailly.