CDBurnerXP is a free application to burn all kinds of CDs and DVDs, including Blu-Ray and HD-DVDs. It also includes the feature to burn and create ISOs and bootable discs. It has a logical, multilanguage interface, so it is fairly easy to operate, even for beginner users. CDBurnerXP is available only for Windows systems as of now, but it runs on versions as old as Windows 2000. It's a truly free software - even if you need this application for your company, you can freely install it on all computers.