Guiffy Software
The Advanced Cross-Platform Diff/Merge

Welcome to Guiffy Software
At Guiffy our focus is Advanced Cross-Platform Diff/Merge software. Our product is a visual diff tool, merge tool, and folder compare tool that makes comparing and merging sources easy and reliable. Guiffy is used around the world by thousands of professional organizations on a wide variety of platforms (Including: Windows, MacOS X, Linux, and Unix).
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free diff tool, merge tool, folder compare download
Guiffy News: April 4, 2017: Guiffy 11.6 released . . .
  • SureMerge Intelligence improved, Image Diff server mode, Inline differences improved
February 10, 2017: Guiffy Blog - Talk about diff & merge launched . . .

October 4, 2016: Guiffy 11.5 released . . .
  • FileTreeDiff API, Updated Saved HTML 4/5 report format, MacOS X 10.12 (Sierra) tested/supported
April 5, 2016: Guiffy 11.4 released . . .
  • File Compare Align Similar Lines, Performance Improvements

Our 3-way Merge Tool - SureMerge™
diff/merge tool
(To view the screenshot)
Clickon: Windows, MacOS X, or Linux
  • Guiffy's Trustworthy 3-way merge tool, called SureMerge™, surpasses all other merge tools with its intelligent hybrid algorithms and ease-of-use. See our SureMerge White Paper which includes test kit files for evaluating 3-way merge tools. For more Merge Tool info...

  • Guiffy's visual diff tool can be used to compare source files of any type with builtin support of Unicode (UTF8 & UTF16), MBCS, SJIS, and over 150 File Encoding and character set formats.
    diff/merge Unicode-16
    (Clickon thumbnail to view the screenshot)

    For more Diff Tool info...
Plus, Guiffy fits into your environment...
Guiffy includes: CM integrations (Git, SVN, ClearCase, Perforce and many more),
Desktop integrations, Command Line Interfaces, and an API library.

For further information, see these topics in Guiffy's Help.

  • Guiffy also provides folder compare and file tree synchronization capabilities. Expand a subfolder... Double-click on a file in Guiffy's Directory Compare and a File Compare view is quickly generated in another window.
    launch file compares from folder compares
    (Clickon thumbnail to view the screenshot)

    For more Folder Compare info...
  • Guiffy's Image Diff tool includes: Command Line Interface, 3 Filter options, Overlay option, Threshold control, Image File Info. panel, Image resizing, Compare Metrics and Save Diff view.

    The Image Diff tool is integrated into the Guiffy's file/folder compare and is also available as a free stand alone application.
    For more Image Diff tool info... diff tool Syntax
    (Clickon thumbnail to view the screenshot)

  • File Compare reports saved as HTML... reflect all of Guiffy's Style (Color and Font) choices and the diff tool results driven by Ignore and Show options.
    compare reports saved as HTML
    (Clickon thumbnail to view the screenshot)
And, Guiffy consistently receives the very highest review ratings...
Jolt Award
For further information, see our Tucows, Dr. Dobbs, and CNET reviews.

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