Defraggler (NEW THIS ISSUE) Product: Defraggler v1.17.172 Company: Piriform Ltd. Website: www.piriform.com Type: Free Requirements: Windows XP/Vista/7 Defraggler is a file defragmentation tool. It differs from other defrag tools on the market, by enabling you to quickly and simply defrag the files you want to, without having to process the whole drive. Simply run it, select the file and defragment in seconds.