Diffchecker is described as 'Pro enables you to compare various types of content, on your desktop or directly in the browser' and is a Diff Tool in the development category. There are more than 50 alternatives to Diffchecker for a variety of platforms, including Windows, Mac, Linux, Web-based and BSD apps. The best Diffchecker alternative is WinMerge, which is both free and Open Source. Other great apps like Diffchecker are Meld, Beyond Compare, KDiff3 and ForskScope.
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.
Perform detailed folder and file comparisons on Mac with side-by-side expandable trees, colour and icon indicators, content-based matching, manual synchronisation, filename templates, quick reload, tabbed interface, drag-and-drop, and intuitive visual controls.
Use Kaleidoscope to spot the differences in text and image files. Review changes in seconds with the worlds most advanced file comparison application.
Kaleidoscope is the most popular iPad alternative to Diffchecker.
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.
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.
Diff Match Patch is a high-performance library in multiple languages that manipulates plain text.
FileMerge lets you compare one file to another or one directory to another and merge the files or directories together.
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)...
Thailand
United States
Germany
EU
New Zealand
It's fully free and open source