WinUSB Maker Tool!

The Reliable USB Formatting Utility

UNetbootin (Universal Netboot Installer) is a cross-platform utility that can create Live USB systems and can load a variety of system utilities or install various Linux distributions and other operating systems without a CD.

YUMI (Your Universal Multiboot Installer), is the successor to MultibootISOs. It can be used to create a Multiboot USB Flash Drive containing multiple operating systems, antivirus utilities, disc cloning, diagnostic tools, and more. Contrary to MultiBootISO's which used grub to boot ISO files directly from USB, YUMI uses syslinux to boot extracted distributions stored on the USB device, and reverts to using grub to Boot Multiple ISO files from USB, if necessary.

LiLi USB Creator is a free software for Windows that allows you to create a bootable Live USB key with a Linux on it.

MultiBootUSB is a software to create multi boot live Linux on a removable media i.e USB disk. It is similar to UNetbootin but many distros can be installed, provided you have enough space on the disk. MultiBootUSB also provides an option to uninstall distro(s) at any time, if you wish.

WinToFlash starts a wizard that will help to make USB bootable and pull over the contents of a windows installation CD or DVD and prep the USB drive to become a replacement for the optical drive. It can also do this with your LiveCD or DOS.

WinSetupFromUSB is a Windows program, which prepares multiboot USB flash or fixed disk to install any Windows versions since 2000/XP, boot various Linux and *BSD flavors, as well as many Windows, Linux, DOS based and other utilities. Since version 1.1 program can create USB disk with Windows versions which support (U)EFI (Vista x64 SP1 and later x64 versions), which USB disk can be used in both (U)EFI and Legacy BIOS modes.

Multisystem is an awesome tool created by LiveUSB.info, that works similar to our Windows based MultiBootISOs USB creator, but was created for use within Linux. It also uses Grub2 instead of Grub Legacy, and can be run from within Ubuntu Linux to create a Custom Multiboot UFD containing your favorite Bootable Live Linux Distributions. (via http://www.pendrivelinux.com/multiboot-create-a-multiboot-usb-from-linux/ )

LiveUSB Install is a free software for GNU/Linux and Windows.

RMPrepUSB allows the Windows user to easily and quickly 'roll their own' multiboot USB drive.

Utility for writing raw disk images & hybrid isos to USB keys.

HP USB Disk Storage Format Tool utility will format any USB flash drive, with your choice of FAT, FAT32, or NTFS partition types. You can also make the disk bootable by specifying a file location.

ZOTAC WinUSB Maker was made to be the simplest and functional application to make a USB Bootable. With less than 500KB, an impressive GUI and responsive user interaction, Josh Cell Softwares presents the ZOTAC International version of the WinUSB Maker software.

WiNToBootic is free program, has the sole function of creating boot disks using ISO images. It is a standalone small and portable tool of only 600KB. Super User Friendly. Good for use where you do not have CD drive (like laptop) and have to install the OS.