Compare It!!

Beyond Compare allows you to compare files and folders. By using simple, powerful commands you can focus on the differences you're interested in and ignore those you're not. You can then merge the changes, synchronize your files, and generate reports for your records.

KDiff3 is a file and directory diff and merge tool which compares and merges two or three text input files or directories, shows the differences line by line and character by character, provides an automatic merge-facility, has an editor for comfortable solving of merge-conflicts, provides networktransparency via KIO, has options to highlight or hide changes in white-space or comments, supports Unicode, UTF-8 and other file encodings, prints differences, supports version control keyword and history merging. »

SyncToy is a free PowerToy designed by Microsoft, that provides an easy to use graphical user interface that can automatically synchronize local or network files and folders, but not WebDAV-, "Windows Mobile" files or folders and no triangle-sync as only Allway Sync, Synkron, SyncLess or GoodSync can do. No VSS-support, not portable. SyncToy can manage multiple sets of folders at the same time; it can combine files from two folders in one case, and mimic renames and deletes in another case. Unlike other applications, SyncToy actually keeps track of renames to files and will make sure those changes get carried over to the synchronized folder. »

WinMerge 2011 series is a fork of the original WinMerge application that compiles without ATL/MFC dependencies to enable zero-budget developers to build WinMerge from sources using Visual C++ Express editions.

Code Compare is a free file and folder merge tool from Devart. New version of Code Compare comes with significantly increased startup speed:- Standalone application start is two times faster;- Opening a file comparison document in Visual Studio is two times faster;- Considerable acceleration of the first environment start after installing Code Compare.

DiffMerge is a graphical file comparison program for Windows, Mac OS X and Unix, published by SourceGear.* Integrates with Windows Explorer; adds a shortcut to the context menu.* Compatible with different character encodings, including Unicode support.* Performs a side-by-side comparison of two folders.* Supports comparison of three files.

Merge is the visual file comparison (diff), merging and folder synchronization application from Araxis. Use it to compare and merge source code, web pages, XML and other text files with native application performance. Directly open and compare the text from Microsoft Office (Word and Excel), OpenDocument, PDF and RTF files. Compare images and binary files. Synchronize folders. Perform code reviews and audits. Work with folder hierarchies containing thousands of files. Merge integrates with many SCM (version control) systems and other applications. »

FileMerge is part of Xcode .

Diffuse is a small and simple text merge tool written in Python. With Diffuse, you can easily merge, edit, and review changes to your code.

Merge is an online merge and diff tool that allows you to share and save your documents.

SmartSynchronize is a multi-platform file and directory compare tool. It allows you to compare files or perform 3-way-merges, both with the ability to edit the file contents.

Diff Checker is a free online diff tool that quickly and easily gives you the text differences between two files.

DiffPDF can compare two PDF files. It offers two comparison modes: Text and Appearance.