WinMerge 2.16.56.2

WinMerge: Open-source File and Folder Comparison for Windows

WinMerge is a long-running, open-source differencing and merging tool for Windows that highlights file and folder changes in a clear visual interface. Actively developed on GitHub, WinMerge targets developers, sysadmins, technical writers and anyone who needs reliable, fast comparisons and interactive merges across plain text, images and tabular data.

Latest release and download options

The current stable release is WinMerge 2.16.56 (released 2026-04-27). Installers are provided for x86 (32-bit), x64 and ARM64, plus a per-user installer that avoids requiring administrative privileges. Official download pages offer standard installers, per-user installers, portable/executable zip builds, full source archives and SHA-256 checksums for verification. Binaries are available from the project site and mirrored on SourceForge; source and development artifacts are hosted on GitHub.

Platform support and system requirements

• Supported Windows versions: 32-bit installer supports Windows XP SP3 or newer; 64-bit installers require Windows 7 or newer.
• Architectures: x86, x64 and ARM64 builds available.
• Installation choices: standard system installer, per-user installer (no admin rights), and portable zip/exe packages for ad-hoc or portable usage.

Core comparison and merge features

• Side-by-side file compare: Visual text differencing with intra-line highlighting, line numbers, syntax-aware editor, tabbed views and configurable word-wrap.
• Folder compare: Fast directory comparisons using size and timestamp heuristics, recursive scans and tree-style results for syncing or auditing folders.
• Three-way compare: 3-way file and folder comparison to reconcile branches, resolve conflicts and merge changes.
• Interactive merge and patching: Merge operations with conflict helpers and ability to create patches in Normal, Context and Unified formats for version-control workflows.
• Image and table compare: Visual image comparison with difference highlighting and overlay options; CSV/TSV table compare that shows columns and wraps text per column.
• Moved line detection: Detects moved blocks to reduce noise when code or text is reordered.

Integration, extensibility and workflow features

• Shell integration: Windows Explorer context-menu integration (including 64-bit support) for quick comparisons from the file manager.
• Archive browsing: Support for comparing files inside archives via Merge7z/7-Zip integration, enabling comparisons without manual extraction.
• Plugin architecture and filters: Extendable via community plugins, regular-expression file filters and scriptable filters for custom workflows.
• Localization and documentation: Multi-language UI, an online manual and installed HTML Help for onboarding and reference.
• Portable and CI-friendly: Portable builds and documented source allow use in continuous integration, automated scripts and portable toolchains.

Development, transparency and community

• Open source on GitHub: Source code, issue tracker, change logs and release notes are publicly available on GitHub for review and contribution.
• Active maintenance: Regular releases and incremental improvements driven by volunteer maintainers; frequent tags and CI artifacts visible in the repository.
• Verification and reproducibility: Project publishes source archives and SHA-256 checksums so users can verify downloads or build from source.
• Community resources: Official documentation, support pages, translations and community contributions ease adoption and troubleshooting.

Who benefits from WinMerge?

• Developers: Use as an external diff/merge tool for code reviews, resolving VCS conflicts and creating patches.
• Technical authors and content editors: Precise visual diffs make it easy to compare revisions and consolidate edits.
• Sysadmins and QA: Folder comparisons, archive support and portable builds simplify audits, deployments and verification tasks.
• Teams and automation: 3-way merges, patch generation and scriptable features integrate into collaborative workflows and CI pipelines.