Download of WindowsToUSB 1.3.2 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The program lies within System Utilities, more precisely CDDVD Software.
This free software is an intellectual property of DKey Software. The most popular version of the program is 1.3. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
A great number of new computers, particularly netbooks, laptops and all-in-one PCs, do not come with optical disk drives which were, for a long time, the standard medium for installing any operating system. Today, you can also download Windows from Microsoft's website after purchasing it, but this needs to be done again whenever you reinstall Windows or you want to install it on more than one computer.
You may want to check out more software, such as PhotoCDuke, GEAR PRO "Professional Edition" or CDRCue Cuesheet Editor, which might be similar to WindowsToUSB.