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DiffMerge
All
5
Experiences
Pros
4
Cons
1
Top
Pro
Completely free
DiffMerge is free of charge to download and use for both commercial and open source projects. There's no license needed. However, people who want to contribute to the project monetarily can do so.
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Con
Startup time can be slow
DiffMerge's startup time can be quite slow sometimes.
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Pro
Cross platform
DiffMerge is cross platform and is available for all major operating systems. This means WIndows, Linux and OSX
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Pro
Folder compare
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Pro
Three way merges
DiffMerge supports three way merges.
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44
0
AraxisMerge
All
8
Experiences
Pros
6
Cons
1
Specs
Top
Pro
Point and click merging
AraxisMerge has a feature which is very helpful especially for beginners. By clicking on different parts of a text file you can select all the parts to added in a final merged file. The comparison display also updates real-time as the merge happens.
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Con
Commercial
AraxisMerge is not free: $129 Standard and $269 Professional But this is peanuts for a tool that you can use all day for the rest of your developer life.
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Pro
Directory comparisons
AraxisMerge supports comparing different directories with each other.
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Pro
Beautiful interface
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Pro
Three way merges
AraxisMerge supports three way merges.
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Pro
Update alternative files Word, PDF and even images
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Pro
Works great on large files
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Specs
Platforms:
Windows, Mac
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Experiences
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46
3
Kompare
All
4
Experiences
Pros
3
Specs
Top
Pro
Can create patch files
Kompare can create a patch file which lists the differences between two files. Patch files created this way are also compatible with the patch files created by the CLI diff utility.
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Pro
Supports comparing directories
Kompare can compare both files and directories.
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Pro
Configurable hotkeys
Because it's a KDE app, all the hotkeys are configurable
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Specs
Platforms:
Linux
License:
Free and Open Source
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9
1
CodeCompare
All
11
Experiences
Pros
6
Cons
4
Specs
Top
Con
No longer supported
Problematic with Visual Studio 2022. Semantic code comparison (its main selling point) does not support newer language variations.
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Pro
Graphical showing of where code is added or removed
It does not add a blank line in the other code-pane to show where code was added or deleted. It simply draws a line to show point out its location.
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Con
Does not support custom comment markings
Some compilers use ";" to specify in-line commenting. But as that is not a common method, all added comments are marked as new code. So it becomes difficult to find changes in the functionality of the code.
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Top
Pro
Three-way comparison and automatic merging
Three comparison panes with horizontal and vertical layouts Integrates with version control systems as the merging tool for conflicting file revisions Non-conflicting changes are merged automatically Merging conflicts are highlighted One-click conflict resolution with a mouse button
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Top
Con
Does not support move-detection
Very few programs detect move of blocks of code. Most just show deleted and added instead.
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Pro
Supports comparing folders
Can diff entire folders.
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Con
Free version is limited
Whereas there is a free version, it is missing a lot of great features that you're forced to pay for if you want.
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Pro
Integrated into Visual Studio
Can be used either as a stand-alone product or as the built in diff/merge tool for Visual Studio.
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Pro
Clear overview that marks only the changes, not every line with a change
Most compare tools mark every changed line with colour, making the code just a mess with thousands of coloured lines, while all that might be changed is a sign/character on each line. Code Compare draws boxes around each changed segment and highlights only the real change with a colour.
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Pro
Offers free version and paid for version
You get a lot more if you pay for the pro version.
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Specs
Platforms:
Windows
License:
FREE/$49,95
Dev platforms:
Windows
Lexical Comparison:
C#, C++, Visual Basic, JavaScript, Java, XML
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Experiences
Free / paid
58
7
vimdiff
All
4
Experiences
Pros
3
Cons
1
Top
Pro
Mouse-free interface
It's practically vim, this means that the whole interface is mouse-free, this increases development speed significantly since you are only using the keyboard.
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Con
Not for people who are not used to vim
Since this is basically a vim feature, it's clear that people who aren't used to vim and it's keyboard-based interface would find it very hard to work with vimdiff.
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Pro
Lightweight
Since it's inside vim, it's very lightweight and fast. It fires up quickly and it does all operations painlessly.
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Pro
Helpful to people who work a lot inside the terminal
Using command-line tools (vim/git) keep you stick in the terminal.
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97
13
BBEdit
All
10
Experiences
Pros
7
Cons
2
Specs
Top
Pro
Stable development, been around for decades
BBEdit is commercial software, the paid counterpart to their free application Textwrangler. Though BBEdit comes off as pricey, this allows for stable and consistent updates from the developers. BBEdit has been around since 1992.
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Con
Featureless
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Pro
Can open very large files
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Con
Expensive
It's US$49.99 a single user license.
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Top
Pro
Just about every feature is already built in
No searching for plug-ins that may or may not work.
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Pro
Great customer support
The developer is very responsive to bug reports and feature suggestions.
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Pro
Native application
Follows platform standards.
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Top
Pro
Built-in FTP/SFTP browser
BBEdit can open files directly from, and save them to, any available FTP server. It can also open and save files directly via SFTP (SSH File Transfer Protocol).
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Pro
Great JAMStack environment
You can build the static site of your dreams without needing any external assistants. Although it does not process LESS, SASS, or SCSS files, BBEdit's includes are very powerful.
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Specs
Platforms:
Mac
License:
Proprietary
Collaborative editing:
No
Supported remote file editing protocols:
Yes
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Experiences
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57
9
Kdiff3
All
17
Experiences
Pros
9
Cons
7
Specs
Top
Pro
Supports 3 way merges
For modern version control systems, 3way merge support is a basic requirement, but many other open source diff viewers do not adequately handle 3way merges.
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Top
Con
Cannot do inline diffs
Comparison of 2 files is always side-by-side and there's no option for inline views. Overall a rather poor and confusing UI in general.
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Top
Pro
Free and open source
KDiff3 is completely free to download and use. It's also open source released under the GPL.
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Top
Con
Confusing GUI
4 sub-windows (when you really only need 3), a lot of different colors and even more confusing result-window. No links what has changed between versions and and the result. It clearly shows it's dated or rather outdated. Great if you ever need to do a command line merge, otherwise it sucks.
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Top
Pro
Can compare directories
It is able to compare whole directory trees.
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Con
No precise editing of the compared files
Precise work line-after-line is not possible. Only a version after the automated merge-step is editable, but not the two files separately.
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Top
Pro
Supports editing files directly
In addition to comparing two files it also allows you to edit the merge result right in place.
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Con
No longer supported by Homebrew for MacOS
Cannot be installed easily on Mac as of Aug 2019.
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Top
Pro
Diff by character not by lines
On comparing two files, difference is shown by characters; not by lines.
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Con
Problems when files have different number of lines
For example, if you add 3 lines: A, B and C locally but on the other change there are only A and C, Kdiff3 will work out that A was added, then it says that B conflicts with C but adds C again anyway.
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Pro
The UI is customizable
Allow customizing colors regardless of user/system theme.
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Con
Slow for large files
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Top
Pro
Supports manual code aligning
With selecting code in one window and hitting Ctrl+Y, then selecting some other code in second window and also hitting Ctrl+Y you can manually align the code.
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Top
Con
No image compare
Compare is text based.
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Pro
Preprocessing before calculating differences
There are options that may pre-process compared files before Kdiff3 actually do a comparison - to ignore for example automatically generated dates and/or revision numbers added by commit hooks.
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Pro
Context menu shortcut
You can right-click a folder/file and the options: Save <file> for later Compare with will be available, making launching KDiff3 really convenient.
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Specs
Platforms:
Windows, Linux, Mac
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Experiences
Free
496
68
P4Merge
All
7
Experiences
Pros
5
Cons
1
Specs
Top
Pro
Free
P4Merge is free of charge.
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Top
Con
Directory comparison is not supported
With P4Merge it's impossible to compare two different directories to find differences.
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Top
Pro
3 way merge support
P4Merge presents merge information in 4 panes - BASE, LOCAL, REMOTE and MERGE_RESULT.
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Top
Pro
Detects minimal changes without having a common ancestor
After a merge sometimes you have conflicts. You can resolve them by using a merge tool. You can run git mergetool --tool-help to get more details about what tools are supported. You will get an output like the following git mergetool --tool=<tool> may be set to one of the following: p4merge tortoisemerge vimdiff vimdiff2 vimdiff3 The following tools are valid, but not currently available: araxis bc bc3 codecompare deltawalker diffmerge diffuse ecmerge emerge gvimdiff gvimdiff2 gvimdiff3 kdiff3 meld opendiff tkdiff winmerge xxdiff Some of the tools listed above only work in a windowed environment. If run in a terminal-only session, they will fail.
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Top
Pro
Also has image diffing
For those who are working in both text based source code or files, as well as images, its nice to have the diff functionality of both present in the same product.
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Top
Pro
Cross-platform with a good Mac port
P4Merge works on Windows, Linux and OS X.
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Specs
Platforms:
Windows; Mac; Linux
License:
Free
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Experiences
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271
48
Beyond Compare
All
17
Experiences
Pros
13
Cons
3
Specs
Top
Pro
Supports comparing folders
Beyond Compare can be used to compare both files and folders. File-Filters possible.
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Top
Con
No dark mode
Lack dark mode.
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Top
Pro
Supports 3 way merge
Good overview. Clear display of changed lines (background color) and changed characters (foreground color).
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Top
Con
No touch support
This is important for scrolling
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Top
Pro
Supports editing files directly
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Con
Paid proprietary software
Beyond Compare is not free. It offers different license options depending on the number of members in a team and depending on the software version.
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Top
Pro
Has rules for adding ignore-masks and replacement rules
So parts you don't want to see in your comparision can be hidden with ignore masks. Parts that are okay to be changed can be set with change-lists so beyond compare knows what's the replacement value and skips displaying this. So you can focus on the for you important changes. For example with the ignore mask I was able to compare two logs with different timestamps but nearly same content. (beginning with timestams the first x characters adding to ignore)
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Top
Pro
Synchronize folders
Can be used to synchronize folders. Including wildcards.
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Pro
Works well with large files
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Top
Pro
Can be used to compare image files
This is a useful feature for game developers using Git.
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Pro
Opens popular archive formats as directories
Compare archive to directory or to another archive, update ZIP archives by copying files from other side or by editing them directly in compare view.
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Top
Pro
Can compare remote directories
Beyond Compare can compare directories through FTP, SFTP. Also it can compare directories hosted on Dropbox or Amazon S3.
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Top
Pro
One license covers all major OSs (Linux/Windows/Mac)
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Pro
Customer Service is awesome and easy to work with
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Top
Pro
Has Registry compare
You can compare Registry vs Registry or Registry vs .REG file, both local and remote. You can copy values and keys between sides or edit them.
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Top
Pro
Has file conversion/preprocessing feature
You can run a script or executable based on file extension before showing a file. Great for beautifying XML, extracting text from MS Office documents, running dis-asm etc.
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Specs
Platforms:
Windows; Mac; Linux
License:
Proprietary
Release Date:
October 19, 2023
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Experiences
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312
54
WinMerge
All
13
Experiences
Pros
9
Cons
3
Specs
Top
Pro
Compare folders and files
Can show what files has been changed in a folder, allows comparing files in tabs.
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Top
Con
Windows only
It's only available for Windows. No Mac or Linux versions available. It is possible to run in Linux via WINE, although a bit unstable.
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Top
Pro
File edition
You can quickly copy changed lines (or files in folder comparison) in both directions with keyboard shortcuts. You can edit the files as well, with syntax highlighting of some languages.
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Con
Development is spotty
The latest version (2.16.0) was released in November 2018. Before that the last official release was made in 2013. The 2.16.0 is actually one of the two forks (Winmerge-v2-jp) that were kept maintained throughout the years, it just got named as the official release. The other fork, WinMerge2011 is still being actively developed too. It's on par with the historical version, and has additional features such as showing only differences and a 64-bit version. An 'official' list of forks is maintained here.
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Top
Pro
In line comparison
Can show differences within a line.
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Con
No 3-way merge
Cannot merge 3 files, can do only comparisons by pairs. Makes it unsuitable for merging operations, still useful to compare two versions in the history.
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Top
Pro
Free & Open source
Winmerge is a free and open source tool.
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Pro
Good shell integration
Select two files and compare them. Alternatively, select one file, navigate elsewhere, select the other file to compare. Also supports drag'n'drop of files / folders from Explorer. History of past comparisons.
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Pro
Lightweight, quick startup
Binary is less than 3 MB, so it starts quickly
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Pro
Filters
Can filter out files for folder comparison, lines for file comparisons, with regular expressions. Options also allow to ignore whitespace differences, white lines, case change, line-ending changes, etc.
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Pro
Good navigation
Keyboard shortcuts (and toolbar buttons) to navigate to next (previous) difference, side panel shows a map of the files with changed lines and allows to jump to a given place.
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Pro
Good detection of moved lines
Detects when a block of lines has been moved in the file and shows the relation.
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Specs
Platforms:
Windows
License:
Free and Open Source
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Experiences
Free
111
29
Kaleidoscope
All
7
Experiences
Pros
4
Cons
2
Specs
Top
Con
Mac OS only
Kaleidoscope is a Mac OS X only app.
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Top
Pro
Simple UI
Kaleidoscope has a beautiful and simple UI. It displays the two files that are being compared side to side, highlighting all the differences in a way that's easy to understand.
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Con
Paid software
Kaleidoscope is not free, costing $69.99.
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Top
Pro
Diff within a line
When working in code, line-by-line diff can still be hard to spot small changes within the line. Kaleidoscope will highlight what has changed.
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Top
Pro
Supports comparing folders
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Pro
Image difference viewer
Kaleidoscope supports image diff viewer in addition to git diff. It's able to find even the slightest changes between two versions of the same image.
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Specs
Platforms:
Mac
License:
Proprietary
Pricing Model:
Subscription ($8/month)
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Experiences
$69.99
52
25
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