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

Compare It! is described as 'Easily compare and merge text files; compare doc, xls and pdf files; prepare comparison reports and printouts' and is a File Comparison tool in the file management category. There are more than 50 alternatives to Compare It! for a variety of platforms, including Windows, Linux, Mac, Web-based and Self-Hosted apps. The best Compare It! alternative is WinMerge, which is both free and Open Source. Other great apps like Compare It! are Beyond Compare, KDiff3, SyncToy and Diffchecker.
Merge is an online merge and diff tool that allows you to share and save your documents.

GNU Diffutils is a package of several programs related to finding differences between files.
DiffMerge is a graphical file comparison program for Windows, Mac OS X and Unix, published by SourceGear.

Difftastic is a diff tool that compares files based on their syntax. It supports over 20 programming languages and when it works, it's fantastic.

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.


Compare PDFs intelligently with i-net PDFC. It detects content differences—not just text or images—and displays them beautifully, like holding two pages to the light.




WinMerge JP is a fork of the original WinMerge, but after 2018 the two are nearly identical. WinMerge JP's features including 3-way compare has been merged into the original.


Kup is created for helping people to keep up-to-date backups of their personal files. Connecting a USB hard drive is the primary supported way to store files, but saving files to a server over a network connection is also possible for advanced users.




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. SmartSynchronize is specialized in comparing directory structures (for example, of software projects)...



Visualize folders side-by-side and find immediately which files are different, colors help to understand the diff type. Colors identify older, modified and newer files.


