The GNOME ecosystem used to have Nemiver[1], which died because nobody was maintaining it (though there are people working on debugging support in Builder[2]).

The GNOME ecosystem used to have Nemiver[1], which died because nobody was maintaining it (though there are people working on debugging support in Builder[2]). Of course, there is also DDD[3], the grandfather of all gdb frontends, in pure X11. [1] https://wiki.gnome.org/Apps/Nemiver https://wiki.gnome.org/Apps/Nemiver [2] https://builder.readthedocs.io/en/latest/projects/debugging.html https://builder.readthedocs.io/en/latest/projects/debugging.... [3] https://www.gnu.org/software/ddd/ https://www.gnu.org/software/ddd/