for made a Bootstick, I use these portable Apps,
you can choose from 50 Linux Os:

LiLi USB Creator http://old.linuxliveusb.com/

MultiBootISOs http://www.pendrivelinux.com/boot-multiple-iso-from-usb-multiboot-usb/

unetbootin http://unetbootin.sourceforge.net/

Universal-USB-Installer http://www.pendrivelinux.com/universal-usb-installer-easy-as-1-2-3/

u-stick http://www.com-magazin.de/aktuell/com-tools/com-ubuntu-stick-builder.html

USB Image Tool (already in Liberkey)

hpusbfwhttp://software.informer.com/getfree-hpusbfw-2.1.8/