UNetbootin allows you to create bootable Live USB drives for Ubuntu, Fedora, and other Linux distributions without burning a CD. It runs on Windows, Linux, and Mac OS X. You can either let UNetbootin download one of the many distributions supported out-of-the-box for you, or supply your own Linux .iso file.
The current version has built-in support for automatically downloading and loading the following distributions, though installing other distributions are also supported:
Ubuntu (and official derivatives)
We at AppsForMyPC have tested and used UNetbootin and it worked pretty smoothly 🙂 🙂