zsCompare lets you manually or automatically compare and synchronize Windows or Mac OS X files, folders, and zip files between local directories or networked computers. You can also compare the contents of text files line by line, and then merge the files to include only the changes you want. Freeform text comparison lets you compare text from any source including Word and PDFs. Finally, zsCompare includes a powerful duplicate file finder.

xSync is a comprehensive solution for file and folder synchronization, supporting local file systems, network shares and FTP locations.
xSync's main aim is to compare two locations, track and display differences and synchronize them.
But it also offers the complete functionality of a file manager, including full drag & drop support, deletion, renaming, display and ignore filters, mapped folders and a lot of other useful features.

Compare, view, synchronize and merge files from various folders very easily with this tool. See the differences and copy lines from one file to another instantly. Perfect for programmers who want to compare source codes in many languages. Compare files according to many rules like size, modified date, created date...

SyncFolder is the visual file comparison/merging and folder synchronization application.

SwiftCompare is a utility to Compare Files and Folders and Merge/Synchronize the differences between them. What makes SwiftCompare distinctive is the presence of a very customizable Compare and Merge engine(CME), allowing the user to Compare and Merge/Synchronize Folders and Files the way he likes. SwiftCompare can be used to Manage Source code, keep Folders in Sync, Verify Data, Restore corrupt Data, and much more.

Snapper reads the directory of a disk which is then saved as a "snapshot", so that later you can compare it with a new snapshot of the disk and see what has changed. The results are easy to see with colour-coded highlighting in a familiar Explorer-style interface. Print the results, or export them to create a customisable batch file or installation script. Extremely quick to use and to learn.

ProjectDiff is an utility to compare and synchronize projects, compare and synchronize folders, compare and merge files. Take control of your projects, source code and other files with ProjectDiff. Use it to compare, understand and combine different project versions and file versions. The tight integration project, folder and file comparisons make it easy to identify and review every change in every source file.

Quick and Easy File and Folder Comparing.
Compare two text files side by side, then merge the text files manually (point-and-click) or automatically. Recursively compare and synchronize trees of folders and files to find the differences both in file presence and file contents.
Compare two HTML documents side by side using Microsoft Internet Explorer (Compare HTML documents even if the tags are organised differently in the two documents).

DiffMerge is highly useful for software developers, web designers and other professionals. The tight integration between folder and file comparison makes it easy to identify and review every change in every source file, even when comparing source hierarchies containing thousands of files.

DiffDaff enables easy comparison of files, folder comparison and the detection of differences between two web pages. DiffDaff shows the differences line by line. The variations are classified as changes, deleted, non-existing, and identical content. The variations are also color marked. The source code is accessible and parallel scrolling through the results is possible. Numerous options facilitate the work and simplify the location of difference

Compare Suite can compare both - related and non-related files.
"By keywords" comparison feature highlights common and unique keywords, allowing to compare non-related files.
"Word by word" comparison compares files with a common ancestor.
If you work with plain text, then you can edit compared documents, apply or decline changes.
Finally, you can bring comparison details to simple or advanced structured report.

Compare PDF can compare both - related and non-related files.
"By keywords" comparison feature highlights common and unique keywords, allowing to compare non-related files.
"Word by word" comparison compares files with a common ancestor.
If you work with plain text, then you can edit compared documents, apply or decline changes.
Finally, you can bring comparison details to simple or advanced structured report.

Compare and Merge is a visual file compare and source code compare utility. It lets you see the differences between text files, and makes it easy to resolve these differences. For programmers, web developers, and anyone else who works with multiple revisions of files. New features: Quick Bar for faster compares, Smart Refresh mode, Explorer context menu, new options, various bug fixes and tweaks.

Code Compare is an advanced comparison and synchronization tool that compares text, source code, XML files and directories then, highlights differences and merges content via its visual interface. Code Compare can make version comparing and code reviews a much easier process.

Beyond Compare is a directory and file compare utility. Synchronize files between laptop and PC, home and office, etc. Compare directory trees side-by-side with mismatches highlighted. Display text files side-by-side with changes highlighted. Great for merging changes to source code. Handles minor editing, Unicode files, Delphi form files. Save favorite sessions for quick access. Built-in FTP and zip support.

Use this program to load MP3 files from your PC to your MP3 Player. As long as your MP3 Player appears as a drive when connected to your PC, you can synchronize your files.

Use this program to keep track of and merge the most recent versions of your files from any device or computer. Keep your files updated by automatically synchronizing multiple copies of individual files. This tool is useful if you do work at home and the office. Folder differences / comparisons are made visible to the user before synchronization. Sync process done safely through simple wizard. This tool is the easiest file merge software around.