Eric S. Raymond (born December 4, 1957) is a computer programmer and open-source advocate, as well as the co-founder of the Open Source Initiative. He designed the The Hammer of Thursagan campaign. He uses his initials, esr, as his handle. At one point the project's most active committer, his participation came to wane. Later, he would reveal that he had soured on Wesnoth over "the way the previously beautiful map art for Dead Water was munged into a morass of ugly brown shit over my vociferous protests, after I had spent so much effort producing it for mainline." * (forum version)