WinDiff is a graphical file comparison program published by Microsoft, distributed with Microsoft Windows Support Tools,[1][2] certain versions of Microsoft Visual Studio, and as source-code with the Platform SDK code samples.
WinDiff was included in the Windows SDK (previously known as the Resource Kit, later Platform SDK) since 1992[3] until Microsoft Windows SDK for Windows 7 and .NET Framework 4 (a.k.a.
Because portions of the Windows SDK were shipped in Visual Studio, WinDiff was also included in Visual Studio until Visual Studio 2010.
WinDiff was removed from the Windows 8 SDK and therefore is not included in Visual Studio 2012 or any later version.
[4] A number of unofficial standalone uploads of the program remain available.