FreeDOS Defrag vs WinContig

FreeDOS Defrag, or DEFRAG, is a free, open-source DOS utility that rearranges file fragments to improve loading times from a specified drive. It offers a menu interface and a command-line mode selected with /C. Full optimization with /F places files at the beginning of the disk without gaps, while /U unfragments files but may leave gaps. The /S option sorts files by name, extension, date and time, or size, with descending order available. Other options support quick defragmentation, rebooting after optimization, and exiting when work finishes. Its help recommends occasional use or running it after installing larger programs or creating many small files. Documented exit codes cover insufficient disk space, read, write, FAT-allocation, and memory errors. DEFRAG runs in the FreeDOS environment, whose 1.4 distribution includes LiveCD, USB, LegacyCD, and floppy editions.

WinContig defragments selected files or folders, so you can process frequently used items without defragmenting an entire disk. It is a Windows standalone executable: no installation or additional DLLs are required, and its files and settings stay in one folder. It supports FAT, FAT32, exFAT, NTFS, and ReFS on internal and external HDDs and SSDs. You can save groups of files and folders as profiles, use command-line switches in scripts or scheduled tasks, and add optional analyze and defragment commands to File Explorer. WinContig can also scan for file-system errors, retrieve S.M.A.R.T. data, and remove temporary files before defragmentation. It supports Windows Vista, 7, 8, 8.1, 10, and 11, along with Windows Server 2008, 2012, 2016, and 2019, in 32-bit and 64-bit editions. It needs 6 MB of free disk space and administrator access. The Freeware plan costs nothing, with personal and commercial use on unlimited Windows computers and no registration or payment.