Windows Diff Tool Free. This repository is no longer maintained and is kept for archival purposes. You can settle for the full version or download this code compare tool free on trial basis to assess its utility.
Apr 28 2020 KDiff3 WinMerge and Vim are probably your best bets out of the 10 options considered. Meld is a visual diff and merge tool targeted at developers. When files are transferred across time zones and between Microsoft FAT and NTFS file systems the timestamp displayed by the same file may change so that identical files with different storage histories are deemed different by a comparer that requires the timestamps to matchThe difference is an exact number of quarters of an hour up to 95 same minutes modulo.
Its also open source released under the GPL.
So my answer is that the Windows equivalent of diff is none other than diff itself. Diff-Ext-for-KDiff3 - shell extension for Windows included in installer originally by Sergey Zorin. It provides two- and three-way comparison of both files and directories and has support for many popular version control systems. Its also open source released under the GPL.