Diff And Patch
Diff tools can be extremely useful when working on large projects, especially when sharing code between several programmers without the aid of a revision control system such as CVS or Perforce. These tools make it possible to track changes betwen two different versions of a mod, and are even capable of seamlessly merging two different mods.
Yet another use is to examine changes on the SDK tree after a update, in addition to reading the changelog.
- A groupware framework for game developing, includes a good diff tool.
- Beyond Compare
- An excellent text comparison tool.
- Scooter Software
- A POSIX layer for Windows which includes many popular GNU tools such as GCC (GNU Compiler Collection), GNU Patch, etc.
- A Windows tool for examining differences between two set of files.
You can read more about how diff software works here: