DDD is a graphical front-end for command-line debuggers such as GDB, DBX, WDB, Ladebug, JDB, XDB, the Perl debugger, the bash debugger bashdb, the GNU Make debugger remake, or the Python debugger pydb. Besides ``usual'' front-end features such as viewing source texts...
Affinic Debugger GUI .aka. ADG, is designed as a graphical user interface for various debuggers. With the graphical windows, ADG can unleash the full power of debuggers by viewing multiple types of information within one view and maneuvering debuggers with easily clicking.
Insight is a version of GNU Project Debugger that uses Tcl/Tk to implement a graphical user inter-face. It is a fully integrated GUI, not a separate front-end program.Discontinued
The project is no longer developed. Last version, 6.8-1, released in July 2009, can be still downloaded from the official website