Diskeeper 2009 introduces system performance innovations so advanced they redefine what a defragmenter can do. Diskeeper defrag engines are so powerful, they can handle volumes with as little as 1% free space. Diskeeper 2009 is the only defragmenter with InvisiTasking technology, enabling defragmentation in real-time, with zero overhead. No fragmentation build up, even during busiest work periods. See for yourself. Version 2009 may include unspecified updates, enhancements, or bug fixes.Download will take you to the publisher's Web site, where you must register for the free download. CNET Editor's Note: This version is localised for European users. Clicking Download Now will redirect you to a page where you may choose your language and proceed with the download. Supported languages include English, German, French, and Spanish.