Cloud, Backup & PC
Best File Comparison Software in 2026
File comparison software helps you examine differences in files or folders and, in some cases, work through edits that need merging. Compare binary and folder comparison with three-way merge and merge conflict tools.
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Diffchecker Diffchecker suits developers, writers, editors, and data or operations teams comparing changes across text and other file types.
From $15/mo Free plan Web · Windows · macOS · Linux9.2 Visit Specs - 02 Code Compare Free plan Windows · API · Browser extension9.1 Visit Specs
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Araxis Merge Free trial Windows · macOS8.4 Visit Specs - 04
Altova DiffDog Free trial Windows8.3 Visit Specs - 05 Avidemux Free plan Open source Web · Windows · macOS · Linux8.3 Visit Specs
- 06 Beyond Compare
Beyond Compare suits developers, system administrators, and others who need to inspect or synchronize files and folders.
Free trial Windows · macOS · Linux8.3 Visit Specs - 07 UltraCompare
UltraCompare suits developers, engineers, IT and system administrators, QA staff, technical writers, and legal, compliance, or business teams comparing files and data.
From $8.33/mo Free trial Windows · macOS · Linux8.3 Visit Specs - 08 Beyond Compare
Beyond Compare suits developers and others who need to compare files or synchronize folders across local and remote storage.
Free trial Windows · macOS · Linux8.2 Visit Specs - 09
Diffract Diffract suits developers and other users who compare source code, directories or binary files across desktop operating systems.
Free plan Windows · macOS · Linux8.2 Visit Specs - 10
KDiff3 KDiff3 suits people who need to compare text files or folders and resolve merge conflicts.
Free plan Open source Windows · macOS · Linux8.2 Visit Specs - 11 AmSo Compare From $1.08/mo Free trial macOS8.1 Visit Specs
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Compare and Merge Free trial Windows8.1 Visit Specs - 13
DeltaWalker DeltaWalker suits desktop users comparing or synchronizing files and folders, including people working with code or using three-way merges.
Free trial Windows · macOS · Linux8.1 Visit Specs - 14 Compare It! Free trial Windows8.0 Visit Specs
- 15 DiffMerge Free trial Windows · macOS · Linux8.0 Visit Specs
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DirEqual From $1.25/mo Free trial Windows · macOS7.8 Visit Specs - 17 ExamXML Free trial Windows7.7 Visit Specs
- 18 Guiffy Free trial Windows · macOS · Linux7.7 Visit Specs
- 19 cwdiff
cwdiff suits Linux command-line users who compare files or directories and Mercurial users wanting an extdiff command.
Free plan Linux7.6 Visit Specs - 20 ExamDiff Pro Free trial Windows7.6 Visit Specs
- 21 FolderMatch Free trial Windows7.6 Visit Specs
- 22 Kaleidoscope From $0.67/mo Free trial macOS7.6 Visit Specs
- 23 Meld
Meld suits people reviewing code changes, understanding patches, or resolving file and folder differences.
Free plan Windows · Linux7.6 Visit Specs - 24 Diffinity
It suits Windows users reviewing source code, text files, or folders.
Free plan Windows7.5 Visit Specs - 25 Mergely
Mergely suits browser users comparing two text files and developers embedding diff or merge functions in web applications.
Free plan Web · API · Self-hosted7.4 Visit Specs
Version-control support and supported platforms can also influence fit, while free-plan availability and paid-from pricing help frame cost. Diffchecker, Diffract, and Beyond Compare are among the options shown. Consider whether you need to inspect individual files, review folders, or resolve conflicting changes, then weigh the listed capabilities against that work.
Compare Diffchecker and Code Compare Get a place on this list