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Welcome Guiffy: Diff Tool, Merge Tool, Folder Compare Jolt Award
Our customers include:
Guiffy diff/merge Customers

GUIFFY NEWS: March 3, 2015
Guiffy 11.1 released:
  • New Unified Diff patch tool
  • New 64-bit Windows shell extension
  • Improved MouseWheel support
November 3, 2014
Guiffy 11.0 released:
  • New Toolbars
  • "Quick" Folder Compare defaults
July 2, 2014
Guiffy 10.6 released:
  • Performance Improvements
  • File Compares > 2 GB
  • Folder Compare reports CLI/API
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).

              free diff tool, merge tool, folder compare download
Guiffy's 3-way Merge Tool - SureMerge™


3-way merge on MacOS X

on MacOS X

diff/merge tool

on Windows

SureMerge on Linux

on Linux
(Clickon the above thumbnails to view the screenshots)



  • 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
    diff/merge Unicode-16
    with builtin support of Unicode(UTF8 & UTF16), MBCS, SJIS, and over 150 File Encoding and character set formats.

    For more Diff Tool info...

    <<<--- Clickon thumbnail to view the screenshot
  • Guiffy implements a blend of 3 diff algorithms to provide the best visual file compare results (including tuneable in-line diffs highlighting) and trusted 3-way auto merge capabilities.

  • Guiffy's visual diff merge tool includes Syntax Highlighting
    with support for over 20 syntax file types builtin
    (Including: C, C++, C#, CSS, Fortran, HTML, Java, JavaScript, JSP, Perl, PHP, Python,
    Ruby, SAS, SQL, Tcl, and XML).
                Clickon thumbnail to view the screenshot --->>>
    diff tool Syntax
  • Guiffy also provides folder compare and file tree synchronization capabilities.
    launch file compares from folder compares

    Expand a subfolder... Double-click on a file in Guiffy's Directory Compare and a File Compare view is quickly generated in another window.

    For more Folder Compare info...

    <<<--- Clickon thumbnail to view the screenshot
  • 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...
                Clickon thumbnail to view the screenshot --->>>
    diff tool Syntax
  • Guiffy file compare built to work on BIG files:
    compare files over 2GB

    Guiffy's I/O is 64-bit (works on files > 2GB). File compare's "folded view" showing changes within context works well on BIG files. Guiffy includes special file compare algorithm for large files.

    For more Diff Tool info...

    <<<--- Clickon thumbnail to view the screenshot
  • File Compare reports saved as HTML...
    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.
    <<<--- Clickon thumbnail to view the screenshot
Plus, Guiffy fits into your environment...
Guiffy includes: Desktop integrations, Command Line Interfaces, CM integrations, IDE integrations, and an API library. For further information, see these topics in Guiffy's Help.

And, Guiffy consistently receives the very highest review ratings...
For further information, see our Tucows, Dr. Dobbs, and CNET reviews.



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