Ultra Defrag is a Free Portable Defragmenter for Windows created by the ultradefrag development team. Unlike some defragmentation tools, this powerful open source defragmenter can perform boot time defragmentation and is capable of quickly and efficiently defragmenting all files, including system locked files, registry hives, and paging files.
PageDefrag is a free portable defragmenter that allows you to defragment files that you might otherwise be unable to defragment with typical defragmenting tools. Files such as registry, paging, event log and hibernation files or those that are open for exclusive access are just a few examples of what this
WinContig is a simple free defrag tool that can be used to quickly defragment files without defragmenting the entire disk. This tool can even defrag ISO files.
Auslogics Disk Defrag is a free and portable disk defragmenting tool designed for fast optimization of modern hard disks. File fragmentation has been known to cause slow startups and shutdowns, slow performance and even crashes.
