Create patches on Windows

A variety of programs on Windows are able to generate patches. The command line utility diff can run on Windows either natively (Unxutils) or via an emulation layer (Cygwin).

If you require or fancy a graphical interface, you can use for example TortoiseCVS, TortoiseSVN or the IDE Eclipse. These programs require that you keep the code you are working on under version control with CVS or Subversion.