FolderMatch - File Compare and Synchronization for Windows XP/2000/2003/Vista32 & 64
Easy to Use Windows File and Folder Utility. Compare and Synchronize Files and Folders With A Simple Button Click. Differences shown side by side in a graphical, easy to understand manner. Its an easy way to stay in sync. 2002 Shareware Industry Award Winner.Fast Duplicate File Finder, .Doc and File Difference Viewer, Time Stamp Editor, and more!See the exact text differences between two text files, Excel spreadsheets, Word documents, or PDF documents
http://www.foldermatch.com
WDiff Home Page
Computers, Software, File Management, File Comparison - WDiff File. An application for the Windows (TM) operating system, which displays the differences between two text files, or between two directories and ZIP archives.
http://www.wdiff.com/
File comparison software for data analysis
Computers, Software, File Management, File Comparison - Formula Software, Inc.. Active File Compare, utility for comparison and synchronization of any text files in visual mode that represents results of compare in two windows on screen side-by-side.
http://www.formulasoft.com/
KDiff3 - Homepage
Computers, Software, File Management, File Comparison - KDiff3. Compares and merges 2 or 3 files or directories.
https://kdiff3.sourceforge.net/
Guiffy - Diff Merge tool & Folder Compare application and API Library
Guiffy is a diff merge tool and folder compare application and API library. Our 3-way merge tool, SureMerge, is the most trustworthy source code merge tool available. Our diff merge tool supports over 150 file encoding formats including Uniocde and MBCS. Advanced features include tuneable inline diff highlighting and a blend of 3 diff algorithms.
http://www.guiffy.com
Meld : Home Page
Computers, Software, File Management, File Comparison - Meld. A gnome2 diff, and merge tool for file comparisons.
https://meld.sourceforge.net/
XXDiff
Computers, Software, File Management, File Comparison - XXDiff. Graphical front-end for diff.
https://xxdiff.sourceforge.net/