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Best Diff and Merge Tools in 2026

When code or files diverge, diff and merge tools help you inspect the changes and bring versions together. Compare folder comparison and merge scope, then check for Git integration, syntax highlighting, and three-way merge support that suits the work you do. Platform support, free plans, and paid-from pricing add practical considerations. Among the named options are Diffchecker, Diffract, and SourceGear DiffMerge; Meld, Code Compare, and WinMerge are also included. The features to weigh may differ depending on whether you are reviewing code or comparing folders, so consider which comparisons and merge workflows matter most to you.

29 apps
Research read 23 Sept 2026
How the order is worked out

1

Avidemux

Free plan Open source LinuxMacWeb+1

9.2 Free plan Visit site
2

KDiff3

Free plan Open source LinuxMacWindows

Choose KDiff3 if you need a free, open-source desktop tool for file and folder comparison or merge conflict resolution. Look elsewhere if syntax highlighting is required.

8.6 Open source Visit site
3

Diffchecker

Free plan APIExtensioniPhone+4

Diffchecker offers a range of comparison tools, from text diffs to document, image, spreadsheet, and folder checks.

7.5 Free plan · paid from $15/user/mo · 14-day trial Visit site
4

Code Compare

Free plan APIExtensionWindows

7.4 Free plan · paid from $69.95 Visit site
5

delta

Free plan LinuxMacWindows

delta offers a broad set of display options for diffs and other command-line output, with documented Git and editor integrations. It depends on less for paging.

7.4 Open source Visit site
6

Diffract

Free plan LinuxMacWindows

Diffract offers broad file comparison in a desktop app and CLI, with the free tier covering unlimited file and directory diffs.

7.2 Free plan · paid from $34/user · 7-day trial Visit site
7

Difftastic

Free plan LinuxMacWindows

Difftastic offers syntax-aware comparisons across many languages and can be connected to several version-control systems.

7.2 Open source Visit site
8

Compare Suite

Free plan Windows

Compare Suite covers document and folder comparison, with local processing and a 30-day evaluation that has no functional limits.

7.1 Free plan · paid from $70 · 30-day trial Visit site
9

Diffinity

Free plan Windows

Diffinity provides detailed two-way file and folder comparisons with source-code-oriented review tools. Check the .NET requirement and license restrictions before using it in your workflow.

7.0 Free plan Visit site
10

Diff Suite

Free plan Web

Diff Suite offers free, browser-based comparison and merging for two text files, with editing tools and support for many file formats.

6.9 Free plan Visit site
11

icdiff

Free plan LinuxMac

icdiff adds a configurable, side-by-side view to two-way file comparison in the terminal. Its listed limits matter for users who need three-way merges or the affected display options.

6.9 Open source Visit site
12

Mergely

Free plan APISelf-hostedWeb

Mergely provides browser-based two-document comparison and merge controls, with an API for web application integration.

6.9 Free plan Visit site
13

Meld

Free plan LinuxWindows

Meld provides file, folder, and version control comparisons with editing and merge support.

6.8 Open source Visit site
14

Meld

Free plan LinuxWindows

Meld brings file, directory, and version-control comparisons together with merge assistance. Its platform limits and incomplete text filtering are worth considering before choosing it.

6.8 Free plan Visit site
15

SourceGear DiffMerge

Free plan LinuxMacWindows

DiffMerge covers file and folder comparisons, three-way merges, and command-line output without a listed charge.

6.8 Free plan Visit site
16

Kompare

Free plan Linux

Kompare provides file and folder comparison, patch handling and selective merging in a Linux graphical application.

6.7 Free plan Visit site
17

mergers

Free plan LinuxMacWindows

mergers offers file and directory comparison, patch handling, and Git integration across three desktop platforms.

6.6 Free plan Visit site
18

WinMerge

Free plan Windows

WinMerge covers file, folder, image, and table comparisons, with merge-related tools and Windows integrations.

6.5 Free plan Visit site
19

Beyond Compare

Free trial LinuxMacWindows

Choose Beyond Compare if you need desktop comparison and merge tools across folders and multiple file formats.

6.4 From $35/user · 30-day trial Visit site
20

Araxis Merge

Free trial MacWindows

Araxis Merge covers file comparison, merging, folder synchronization, reporting, and automation across Windows and macOS.

6.3 From $129 · 30-day trial Visit site
21

DeltaWalker

Free trial LinuxMacWindows

Pick DeltaWalker if you need desktop file and folder comparison, with Pro or Oro for three-way comparison and automatic merging.

6.3 From $39.99 · 30-day trial Visit site
22

Altova DiffDog

Free trial Windows

DiffDog covers file and directory comparisons as well as database work, with Enterprise Edition adding three-way merges and expanded database comparisons.

6.2 30-day trial Visit site
23

DiffMerge

Free trial LinuxMacWindows

Choose DiffMerge if you need file merging alongside folder comparison and synchronization, with configurable change filtering and report creation.

6.2 From $30 · 30-day trial Visit site
24

Guiffy

Free trial LinuxMacWindows

Guiffy provides broad encoding support, large-file handling, folder comparison, and optional three-way merging. Its announced end-of-life date is a major consideration for new purchases.

6.0 21-day trial Visit site
25

P4Merge

Free plan LinuxMacWindows

5.9 Free plan Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

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