FileMerge
WinMerge is an Open Source differencing and merging tool for Windows. WinMerge can compare both folders and files, presenting differences in a visual text format that is easy to understand and handle. DeltaWalker - world's most advanced and intuitive two- and three-way visual file and folder comparison for Mac OS X, Windows and Linux. Use DeltaWalker to compare (diff) and merge files, compare and synchronize folders. See full list on git-tower.com. Diffchecker is a diff tool to compare text differences between two text files. Enter the contents of two files and click Find Difference. Try our desktop app.
Being part of its developer toolset, Apple's own merge tool comes at no additional costs. It might not be the most elegant tool, but it's definitely a solid one that does the job of comparing & merging text.
Beyond Compare
Originally a product for Microsoft Windows, the Beyond Compare team has contributed a fine diff tool to the Mac platform. Like Araxis Merge and DeltaWalker, it goes beyond (pun intended) comparing simple text and also allows diffing Word and PDF contents. In its 'Pro Version', it also supports merging.
Araxis Merge
One of the few diff tools that works with more than just text and image files, Araxis Merge lets you also compare office documents (like MS Word, Excel, Powerpoint, or ODF). It comes in standard and professional editions, and for people working on both macOS and Windows, it's great to know that a single license is valid for both platforms.
NEW: Image Diffing in Tower! Our popular Git client Tower now supports Image Diffing for a variety of formats (including PNG, JPG, GIF, BMP, TIFF, JPEG2000, and HEIC). In both the Working Copy and various History / Changeset views, you can now see the actual images - and how they were changed! Try it yourself - for free!
DeltaWalker
Just like Araxis, the DeltaWalker app also lets you compare office files. However, it goes one step further by letting you compare file archives like ZIP, JAR, and TAR files. Also, if you're regularly performing comparisons on a folder basis, DeltaWalker shines with a great performance in this area. DeltaWalker supports macOS, Windows and Linux.
Mac Compare Text Files
Kaleidoscope
Although it has changed hands (i.e. owners) multiple times, Kaleidoscope is still one of the best diff & merge tools for the Mac. Its beautiful user interface and great image diffing capabilities are what set it apart. Kaleidoscope is also available for the iPad.
Free Alternatives
In case you're looking for a free alternative to the standard FileMerge app, you should also have a look at P4Merge and DiffMerge.
Both can't compare in terms of features and user interface with their commercial competitors - but make for a valid alternative on macOS, Windows, and Linux.
Integrations
Another aspect to watch out for is integrations: before choosing your favorite tool, you should make sure that it plays nicely with the rest of your tool chain. I can already confirm that all of the mentioned tools work seamlessly at least with Tower, our own Git client.
If you don't need the power of a dedicated Diff tool application, the integrated diff views in Tower might be absolutely sufficient for you:
In case you don't know Tower: it's the Git desktop client for Mac and Windows that helps thousands of developers and designers to easily & productively work with the Git version control system. Try it 30 days for free!
Conclusion
Diff & merge apps are amongst the most underestimated tools. But a good one can be really helpful in a lot of situations. Try one of the above and see for yourself!
Mac Os File Compare
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Here's how it works
Select the two files you want to compare and start the comparison. A few seconds later, you will see the differences between the two files.
Not only supports PDF
Mac File Diff Tool
Your files do not necessarily have to be PDFs. This app supports all files that our system can convert to PDF. The conversion to PDF is done automatically.
Mac Comparison Tool
Ease of use
PDF24 makes it as easy as possible for you to compare documents. You don't need to install or set up anything, just select your files.
Supports your system
There are no special requirements for comparing two files on your system. This app works with all major operating systems and browsers.
No installation required
You do not need to install any software. The files are compared on our servers. Your system does not require any special requirements.
Security is important to us
Our file comparison tool does not store your files longer than necessary. Your files and results will be removed from our server after a short time.