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DDD is a graphical front-end for command-line debuggers such as GDB, the Perl debugger, or the Python debugger. Besides "usual" front-end features such as viewing source texts, DDD has become famous through its interactive graphical data display, where data structures are displayed as graphs.

For more information on DDD, visit the GNU DDD Web page.

Additional support for DDD can be found in the DDD mailing list.

DDD for Mac OS X is the binary for DDD built from sources on Mac OS X.

What's New

Version 3.3.9:

New features and minor improvements

  • Support for PHP debugger has been added (1). This is essentially not tested.
  • Source files in subdirectories should be located automatically when using dbx (tested on Solaris' dbx) (2).
  • The perl version supported by DDD is now 5.8.x. The perl debugger changed between perl 5.6.x and perl 5.8.0, which made this update necessary. This change is more...


Mac OS X 10.2 or later (tested with 10.2.6, 10.3.3).

*Previously available here

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davidswelt Member IconComment+10

I'm afraid Terry Teague passed away in 2005.

As an alternative to DDD, try out Aquamacs Emacs, which comes with a built-in visual debugging interface to a number of common debuggers, including gdb and pdb. Download here:


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Version 3.3.9
Jobby Member IconComment+41

All download links appear to be dead. Anybody know of a mirror?

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Version 3.3.9
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Current Version (3.x)


Downloads 11,008
Version Downloads 8,784
License Free
Date 19 Aug 2004
Platform OS X / PPC 32
Price Free