ExamDiff Pro
ExamDiff Pro provides a simple means of performing visual text and binary file and folder comparisons in Windows. It's attractive, easy to use, and offers the tools you need to do the job quickly and thoroughly. It features a double-pane view that allows for side-by-side comparisons, with... For folder comparisons, just double-click a file to jump to a side-by-side file comparison. ... Other features include recursive comparisons, highlighting differences down to the level of words or characters, ability to compare binary files, custom text and HTML reports, search-and-replace (with...
http://www.prestosoft.com/download/ed34.zip - 2Mb - Download - Screenshot

Iside
Iside compares files and folders by computing their hash code (MD5,SHA1,CRC32,... ). Right click on a file, select Copy and by right clicking on another file you will discover if the two files are equal. Includes file comparison, hash generating tool plus a complete folder comparison tool. ... It can also be used for file integrity checking. ... Ideal tool for configuration managers, programmers, deployers. ... The hash function is the fingerprint of file. ... Useful also to compare photos, music and movies downloaded from Internet.
http://www.littlelite.net/iside/sw/IsideTrial13.zip - 628Kb - Download - Screenshot

Diff Commander
I've been using a large number of file synchronization tools. From the very first DOS command-line utilities to powerful plug-ins in modern file shells, such as FAR or TotalCommander. They all are based on the same simple principle. You give them two folders to compare and they return to you a... File comparison was never so visually attractive before. ... It reads folder names from a text file and does comparison/synchronization automatically. ... Diff Commander brings a brand new level of flexibility and usability into folder comparison and file synchronization.
http://www.nikeware.com/download/diffcmdu.exe - 2Mb - Download - Screenshot

SQL Effects Clarity
SQL Effects Clarity is an advanced SQL Server database comparison tool. The tool differentiates itself from other database comparison tools by focusing on ease of use, flexible comparison selections and criteria, lightning fast comparison performance, unique GUI review of differences (instead of... SQL Effects Clarity is a software tool made for software professionals by active software engineers who have to do on a daily basis the kinds of chores the tool is designed for: Verifying change scripts.
http://www.sqleffects.com/download/SetupSQLEffectsClarity.exe - 0b - Download - Screenshot

Files Compare Tool
Files Compare is a visual tool for files and directories comparison. It helps you to compare and merge different versions of the same textual file. A color-coded side-by-side comparison makes it easy to understand differences between two files at a glance, powerful editing engine helps you to... The main features of Files Compare Tool are: - Displaying files side-by-side; - Colored differences sections to simplify analyzing; - Move changes between files with single mouse click or keystroke; - Easy navigation through the differences; - Ability to edit files directly in comparison window; -...
http://www.script-debugger.com/download/fc_setup.exe - 4Mb - Download - Screenshot

SQL Effects Clarity for Sybase ASE
SQL Effects Clarity is an advanced Sybase ASE database comparison tool. The tool differentiates itself from other database comparison tools by focusing on ease of use, flexible comparison selections and criteria, lightning fast comparison performance, unique GUI review of differences (instead of... SQL Effects Clarity is a software tool made for software professionals by active software engineers who have to do on a daily basis the kinds of chores the tool is designed for: Verifying change scripts.
http://www.sqleffects.com/download/SetupSQLEffectsClarityASE.exe - 5Mb - Download - Screenshot

ECMerge Standard (Linux)
ECMerge compares and merges files and folders, side-by-side. It is designed for software engineers, web authors and other professionals who work with multiple revisions of text files or who need to keep multiple folder hierarchies in sync. Save your work at intermediate situation and restart it... Recursively compare and synchronize trees of folders and files to find the differences both in file presence and file contents, works between local directories or networked computers (Windows/Linux/MacOS).
http://www.elliecomputing.com/soft/ecmerge-1.1.27.linux.x86.tgz - 4Mb - Download - Screenshot

ECMerge Standard (Windows)
ECMerge compares and merges files and folders, side-by-side. It is designed for software engineers, web authors and other professionals who work with multiple revisions of text files or who need to keep multiple folder hierarchies in sync. Save your work at intermediate situation and restart it... Recursively compare and synchronize trees of folders and files to find the differences both in file presence and file contents, works between local directories or networked computers (Windows/Linux/MacOS).
http://www.elliecomputing.com/soft/ecmerge-1.1.27.win32.exe - 3Mb - Download - Screenshot

CS-ExcelDiff
ComponentSoftware ExcelDiff (CS-ExcelDiff) is an advanced Excel file comparison tool for Microsoft Windows. ExcelDiff is a great asset to anyone in need of analyzing changes which have been made between two revisions of the same file. Comparisons can made between both single and multiple sheet... · Comparison of multi-sheet documents. ... 0: · Improved accuracy · Additional minor improvements. ... · Bug in Recalculate command fixed. ... · Additional minor fixes. ... New in version 2. ... · Analysis results in a single screen, making it ideal for printout.
http://www.componentsoftware.com/pftp/exceldiff.zip - 1Mb - Download - Screenshot

DBF Comparer
DBF Comparer is a sure way to find out if your DBF files bear similarities or not, if their data fields have matches or not. Basically, this comparison wizard helps you to manage your information and analyze your data at a new level of quality. The program has an easy-to-use intuitive interface,... Key features: User-friendly interface; Memo fields comparison; Case sensitive comparison; Comparison with relation by one of the specified fields; Compare data with or without deleted records; You can create your own DBF file; Available for Windows 98/ME/2000/2003/XP.
http://www.astersoft.com/files/dbfcmp.exe - 969Kb - Download - Screenshot