A customer tried out A1 Sitemap Generator on Mac (using Parallels) and it worked well! Check the sitemap generator on Mac (http://www.microsystools.com/products/sitemap-generator/help/mac-sitemap-generator-tool/) help page for more information and screenshots :)
Anyone here running Linux + Wine? If so, let me know! I would love some screenshots of A1SG on it :) Otherwise I will need to install a Suse or Ubuntu Linux distro to test it myself :)