UltraDefrag

UltraDefrag is an open source disk defragmenter for Windows. It can quickly defragment everything including files which are usually locked by Windows. For instance, UltraDefrag can re-join paging and hibernation files.

Free Open Source Windows

IObit Smart Defrag

Smart Defrag supports deep defragment, defragmentation of multi-volumes, it optimizes file placement and have the option to automate your defragmentation for you.

Free Windows

oo defrag

O&O Defrag packs file fragments quickly and securely back together to optimize your hard disk under Windows.

Commercial Windows

Windows Disk Defragmenter

Disk Defragmenter is a computer program included in Microsoft Windows designed to increase access speed by rearranging files stored on a disk to occupy contiguous storage locations, a technique commonly known as defragmenting.

Free Windows

Condusiv Diskeeper

Condusiv's Diskeeper 16 is designed to be an active defragmenter that defrags while idle, but also delays and caches read/writes by using a pool of system RAM (L1 cache) both to avoid file fragments on SSD or HDDs and boost system...

Commercial Windows

WinContig

WinContig is an easy-to-use stand-alone defragmentation tool that doesn't create any installation directories or Registry entries on your computer. Its purpose is to quick defrag files without the need to defrag the whole disk.

Free Windows

DiskTuna

DiskTuna is an easy to use, on-demand, no frills disk optimizer and defragmentation utility for FAT, FAT32 and NTFS formatted drives.

Free Personal Windows