Beyond Compare 

Beyond Compare is a Windows utility that combines directory compare and file compare functions in one package. Use it to manage source code, keep directories in sync, compare program output, etc.
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Compare It! 

Powerful file compare and merge utility. Features: build-in editor with syntax highlighting, undo and wordwrap; highlights changes within lines; editing or fast by-difference merging; printing; html and text reports; zip support; Unicode support.
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Active File Compare 

Active File Compare is an advanced utility for the comparison and synchronization of any text files in visual mode. Use this tool to compare two versions of the same file or to correct the source code versions.
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WinSuperKit 

WinSuperKit is a powerful network, file compare toolkit that helps you to get ip address and geographical location, capture network packet, monitor network speed.
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AJC Diff 

This program compares two files. Files can be shown combined or side by side. Full diff, context diff or differences only. Color coding, line nos, search and print options.
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Comparator Fast 

Simplifies the comparison / verification / synchronization status of two different directories on any media (local drives, network drives, writable CD's, Compact Flash and electronic media, any drive/disk or device managed as valid windows pathnames)
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