SARDU (Shardana Antivirus Rescue Disk Utility) is a MultiBoot Builder. It could be used to create a Live MultiBoot USB, CD, or DVD containing Antivirus Tools, Live Linux Distros, Diagnostics Tools, Windows PE, Windows Vista, Windows 7, and even Windows XP Installers.
UUI – Universal USB Installer for Windows is a powerful and free tool that helps you create bootable USB drives for Linux, Windows, and system tools. With just a few clicks, you can load any supported ISO file, format your flash drive, and build a Live USB system — no complex setup or technical skills required.
LiLi - Linux Live USB Creator is another nice and simple live ISO to USB builder. Similar to UUI, this app can be used to make a Live Linux bootable USB flash drive from an ISO file of your favorite Linux distribution. You can then boot and run the portable operating system from the removable device, instead of using a CD or DVD.
YUMI (Your Universal Multiboot Installer), is a Multiboot Live USB bootable Windows media creation tool or MultiBoot ISOs utility. This software can also be used to create a USB Installer for Windows or Linux. It helps automate the process of building custom Live bootable Linux USB sticks containing multiple ISO files of your choosing.