Diffchecker compares text, code, and data, either in a browser or with its desktop app.
Alternatives to AmSo Compare
Code Compare is a file and folder comparison and merge tool available as a standalone app and a Visual Studio extension.
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KDiff3
KDiff3 compares and merges files and folders on Linux, macOS, and Windows.
Free planOpen sourceLinuxmacOSWindows7.3Free plan - 5
UltraCompare
LinuxmacOSWindows7.1From $99.95 a year - 6

Diffract
Diffract is a desktop tool for comparing code, folders, documents and binary files side by side on Linux, macOS and Windows.
Free planLinuxmacOSWindows6.8$34 one-time - 7
Beyond Compare
Beyond Compare is desktop software for comparing and synchronizing files and folders.
LinuxmacOSWindows6.4$35 one-time - 8
Beyond Compare
Beyond Compare helps users inspect differences and merge changes across folders, text files, images, and tables.
LinuxmacOSWindows6.4$35 one-time - 9

DeltaWalker
DeltaWalker is a desktop application for comparing, synchronizing, merging, automating, and analyzing files and folders on Windows, macOS, and Linux.
LinuxmacOSWindows6.4$39.99 one-time - 10

Altova DiffDog
Altova DiffDog is a Windows desktop tool for comparing and merging files, directories, and database schemas or content.
Windows6.3$189 one-time - 11

Araxis Merge
Araxis Merge is a Windows and macOS application for comparing and merging files, plus synchronizing directory trees.
macOSWindows6.3$129 one-time - 12
DiffMerge
DiffMerge is a desktop utility for comparing and merging files, as well as comparing and synchronizing folders.
LinuxmacOSWindows6.3$30 one-time - 13
Guiffy
Guiffy is a visual tool for comparing and merging source files and comparing folders, available for Linux, macOS, and Windows.
LinuxmacOSWindows6.3$24 one-time - 14
Kaleidoscope
macOS6.3From $8 a year - 15

DirEqual
DirEqual compares folders and files, then lets users synchronize folder contents on macOS or Windows.
macOSWindows6.2From $15 a year - 16
Meld
Meld is a free visual diff and merge tool for comparing files, folders, and version-controlled projects.
Free planLinuxWindows6.2Free plan - 17
ExamDiff Pro
Windows6.1$37.99 one-time - 18
ExamXML
Windows6.1 - 19
FolderMatch
Windows6.1$36 one-time - 20
Mergely
Mergely is a browser-based diff and merge editor, as well as a JavaScript library for comparing and merging text.
Free planWebAPISelf-hosted6.1Free plan - 21

Compare and Merge
Compare and Merge is a Windows application for comparing text files and folders, locating character-level changes, and merging selected differences.
Windows6.0$39.95 one-time - 226.0$29 one-time
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Diffinity
Diffinity is a free Windows utility for comparing and merging text files, with folder comparison for reviewing differences across directories.
Free planWindows5.9Free plan - 24
Kompare
Kompare is a free Linux graphical application for viewing and merging differences between source files.
Free planLinux5.8Free plan - 25
NextDiff
NextDiff is a Windows utility for comparing two files, text documents, source code files, or folders.
Free planWindows5.8Free plan - 26

WinMerge
WinMerge is a free, open-source Windows tool for comparing and merging files and folders.
Free planWindows5.8Free plan - 27
cwdiff
cwdiff is a command-line wrapper for wdiff that compares directories and displays differences in color.
Free planLinux5.7Free plan - 28
SmartSynchronize
SmartSynchronize is a file and directory comparison tool for comparing changes, merging edits, and synchronizing folder structures.
LinuxmacOSWindows5.4 - 29

P4Merge
LinuxmacOSWindows4.9 - 30
Diff-Text
WebWindows4.7
