Byakhee is a character generator for the Call of Cthulhu pen and paper roleplaying game including the 1890s setting, modern day/Deltagreen.
In answer to janessavr's question, "Why isn't there a compiled application available?" That's at another website, with multiple ZIP files to download: h t t p : / / www.oocities. o r g /siliconvalley/haven/4173/byakhee.html -please remove spaces, added because "URLs in reviews are prohibited." (Used to be on geocities, oocities is one of the rescue/archive sites....)