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Data Display Debugger, or DDD, is a popular free software (under the GNU GPL) graphical user interface for command-line debuggers such as GDB, DBX, JDB, WDB, XDB, the Perl debugger, and the Python debugger. Image File history File links Portal. ... This article is about free software as defined by the sociopolitical free software movement; for information on software distributed without charge, see freeware. ... The GNU logo The GNU General Public License (GNU GPL or simply GPL) is a widely-used free software license, originally written by Richard Stallman for the GNU project. ... A graphical user interface (or GUI, often pronounced gooey), is a particular case of user interface for interacting with a computer which employs graphical images and widgets in addition to text to represent the information and actions available to the user. ... The GNU Debugger, usually called just GDB, is the standard debugger for the GNU software system. ... dbx is a popular, Unix-based source-level debugger found primarily on Solaris, AIX, IRIX, and BSD Unix systems. ... Perl is a dynamic programming language created by Larry Wall and first released in 1987. ... Python is a programming language created by Guido van Rossum in 1990. ...

DDD has GUI front-end features such as viewing source texts and its interactive graphical data display, where data structures are displayed as graphs. A graphical user interface (or GUI, often pronounced gooey), is a particular case of user interface for interacting with a computer which employs graphical images and widgets in addition to text to represent the information and actions available to the user. ...

A simple mouse click dereferences pointers or views structure contents, updated each time the program stops. Using DDD, you can reason about your application by watching its data, not just by viewing it execute lines of source code.

DDD is used primarily on Unix systems, and its usefulness is complemented with many programmers who add open source plug-ins to it. Filiation of Unix and Unix-like systems Unix (officially trademarked as UNIX®) is a computer operating system originally developed in the 1960s and 1970s by a group of AT&T employees at Bell Labs including Ken Thompson, Dennis Ritchie and Douglas McIlroy. ...

External links

• DDD homepage