Free File Comparison and Differencing Tools (Diff Utilities)
4 stars based on
The file comparison tools on this page are useful in a few ways. Firstly, they can tell you whether 2 files have identical content or not. Secondly, they can also be used to pinpoint the exact differences between 2 files especially if they are plain text files. Thirdly, for programmers, they can be used to create patch files that can be used to update one of those files to the other useful for sending small updates to your end users without requiring them to re-download everything.
Those are mostly meant for programmers. Also note that not all the utilities listed have a visual interface; some of them require you to use the command line, so if you're not comfortable with that, get a different one. As far as possible, I've tried to note in my mini-review below if a particular program is command line based to make it easier for you, but if I miss something, and you find the program doesn't have a window for you to click on, just download a different program.
They're all free, after all. This is a free diff program that compares two text files including Unicode ones and displays the results side by side with the differences highlighted. This is a Windows. Binary file compare windows free command line utility bsdiff looks for differences between two binary files that is, files that are not plain text files and creates a patch that can be used by bspatch to change or update one of the binary files to the other.
Such binary diff tools as they are called are often used by software developers to deliver updated versions of their software to their users without requiring their users to download everything all over again, just to upgrade to a new version. They are also used for things like version control software. In any case, bsdiff is known for its ability to create very small patch files. The program works on numerous systems, including Linux, the BSD familyWindows and probably others.
Source code is available. WinMerge binary file compare windows free a Windows file differencing and merging tool. It has a Windows frontend over the GNU diff and merge utilities. It includes Visual SourceSafe integration, visual differencing of text files, the binary file compare windows free to diff entire directories, multiple level undos, an integrated editor.
Actually, xdelta is apparently more than that - it is, according to their web page, "a complete system for managing delta-compressed storage and network transport".
If you need to compare two text files and get a report of which lines have changed, the GNU command line diff utilities can show you those differences.
It is a standard part of Unix-type systems like Linux and FreeBSDetcbut if you have an operating system that does not come with a useful file binary file compare windows free text comparison utility, you can get the source code for the program here.
Note that the utilities are command line based, and come only in source form, so you have to compile them yourself. KDiff3 compares two binary file compare windows free three text files and shows the differences between them line by line and even character by character.
KDiff3 works on Unix systems like Linux as well as Windows. You can compare two or three files with the differences highlighted.
It also has the ability to merge files, unmerge CVS conflicts into two separate files so that you can resolve the conflicts, etc.
It uses an external diff program that is compatible with GNU diff presumably in its interface. ExamDiff shows you the difference between two ASCII text files Unicode not supported by displaying the two files side by side with the changes binary file compare windows free different colours.
You can configure the colours used. DiffMerge allows you to visually compare and merge files by graphically showing you the differences between them. Intra-line highlighting of differences is supported along with support for editing the files. You can also perform a side-by-side comparison of 2 folders; the folder diff facility will show you the files that are only present in one folder as well as distinguish between those that are identical and those that are different.
It's Merge facility binary file compare windows free you to see the changes between 3 files, automatic merging when safe, and the ability to edit the resulting file. The Windows version features Windows Explorer binary file compare windows free. Diffuse can compare an arbitrary number of files side by side. You can manually correct the output so that the matching lines are aligned as well as edit the files directly from the utility.
Other features include syntax highlighting, Unicode UTF-8 support, unlimited undo, etc. To link to this page from your website, simply cut and paste the following code to your web page. Free File Comparison and Differencing Utilities. This page was last updated on 24 March If you find this site useful, please link to us.
Free File Comparison Utilities The file comparison tools on this page are useful in a few binary file compare windows free. Lexical Analyzers, Parser Generators, etc Free File Comparison Utilities diff tools Diffinity This is a free diff program that compares two text files including Unicode ones and displays the results binary file compare windows free by side with the differences highlighted.
WinMerge WinMerge is a Windows file differencing and merging tool. Java xdelta This binary file compare windows free a Java version of xdelta, a program that can make binary diffs of two files. GNU Diff Utilities If you need to compare two text files and get a report of which lines have changed, the GNU command line diff utilities can show you those differences.
KDiff3 KDiff3 compares two or three text files and shows the differences between them line by line and even character by character. ExamDiff ExamDiff shows you the difference between two ASCII text files Unicode not supported by displaying the two files side by side with the changes in different colours. Diffuse Diffuse can compare an arbitrary number of files side by side.