DAEMON Tools is a virtual cd/dvd-rom emulator. It is able to emulate nearly all known copy protections on the market today. !! THIS VERSION SUPPORTS 32BIT OS (Windows XP, Windows2003, Windows 2000, VISTA) ONLY !! This version has an option to install client-side software applications (DAEMON Tools Searchbar and Save Now) that deliver a limited number of behaviorally targeted and contextually relevant coupons, ads and comparative shopping results directly to consumers desktops - without compromising the privacy, security or smooth functioning of peoples computers! No URL hijacking or redirects! In order to support FREE distribution of DAEMON Tools we highly encourage you at least to try out this optional software! (you can remove it anytime later when you wish: via Control Panel-> Add/Remove Programs)

Most of the blurb is at least dedicated to the included Adware. At least they're honest. And apparently it is a very comprehensive tool. For a closed source solution.