Release audits
Diff branches before tagging, isolate moved blocks, and merge chosen sections instead of whole files.
Windows · GPLv2 · Maintainer community
Track every edit.Choose what to keep.
WinMerge is a no-cost Windows program for comparing and blending files and directory trees. Line up two versions, review highlights, and apply only the changes you intend.
Scroll map
Jump between hunks without losing place
Active compare view
Tree scan
Recursive folder status at a glance
32K+Weekly installs
4.8Average rating
GPLv2Source published with releases
x64Also ARM64 & legacy x86
Quick path
Four steps from download to merged result
A compact checklist from installer to a confident merge.
- Download the right build
Choose x64, ARM64, or x86 from the Install page. Confirm SHA-256 hashes before launching Setup.
- Point at files or folders
Use the picker dialog or Explorer shortcuts so the left pane starts with your reference copy.
- Study the highlighted diff
Twin panes, inline marks, a summary strip, and a minimap keep lengthy sources readable.
- Apply merges or exports
Copy hunks, emit patch files, or synchronize trees—including three-way views when you need them.
Use cases
Three daily workflows
Each card links to a routine you can start in minutes inside WinMerge.
Server parity
Match config directories between hosts, filter with patterns, and peek inside packaged archives.
Housekeeping
Find redundant folders, review spreadsheet exports in grid mode, or overlay bitmap pairs.
Feature grid
What the stable line includes
A tighter map of built-in capabilities.
Picture & spreadsheet mode
Compare bitmaps by block or overlay. Open CSV/TSV as columns with wrapping for audit reviews.
Patch writer
Export Normal, Context, or Unified diffs for tickets and code review.
Explorer hooks
64-bit shell entries with consistent left/right ordering.
Archives & add-ons
Browse 7-Zip contents with signature sniffing for jars and office bundles. Extend via plugins.
Speed controls
Lightweight folder passes, Quick Contents limits for huge files, and delayed rescan while editing.
Context
Where WinMerge fits among differencing apps
License, depth, and upfront cost in one glance.
| Capability | WinMerge | Typical commercial | Generic free |
|---|---|---|---|
| License model | GPLv2 · no charge | Paid seat | GPL / gratis |
| Windows-native UX | Yes (Win32 shell, x64/ARM64) | Often yes | Mixed |
| Three-way compare | Files & folders | Full suites | Sometimes limited |
| Image / table tools | Included | Often extra | Uncommon |
| Cost to begin | $0 | Subscription or license | $0 |
Need the current stable installer?
WinMerge 2.16.56.2 — x64, ARM64, and x86 installers plus portable ZIP archives on winmerge.cc.