http://www.botchief.com/xulrunner29.0.zip
http://www.botchief.com/xulrunner33.0.zip
http://www.botchief.com/xulrunner45.0.zip
http://www.botchief.com/xulrunner60.0_x86.zip (32-bit system)
http://www.botchief.com/xulrunner60.0_x64.zip (64-bit system)