After trying many frontends for gdb I find that the TUI is the best. You just need to know about Ctrl + L to redraw if your program is printing stuff because the interface then become garbled.

I just put :

   layout src
   set confirm off

in my $XDG_CONFIG_HOME/gdb/gdbinit

This is a Qt UI for GDB.

There's also gdbgui that I know of, a web-based UI for GDB:

https://www.gdbgui.com/

Always good to see more movement in the debug tooling

GDB also has a built-in text user interface (TUI) that is surprisingly easy to use[1]. It even supports mouse interaction.

[1] https://sourceware.org/gdb/current/onlinedocs/gdb.html/TUI.h...

I built it and tried it out a bit with Godot on Linux. It seems OK (the UI is a bit on the "- how many widgets do you want? - yes" side), but also a bit janky. Trying to change the font for the editor didn't work, hovering over a variable to see its value either does nothing (but there is a sub-second cursor change that indicates something is supposed to happen) or it shows an error from GDB about trying to use an expression with a type or keyword (so there was an intent to show a value on a tooltip, it is just broken) - doubleclicking on a variable does add it in some panel with its current value and a timestamp, so the functionality for reading values/expressions from the UI is there too, just not done in the same way as the tooltips.

If polished a bit it could be useful, though from all the frontends i've tried the one i disliked the least (none are great) is Gede[0] (which i just noticed had a new release a few hours ago) as it has a very simple and straightforward UI and while it doesn't expose much functionality, what exposes seem to work fine without bugs.

[0] https://gede.dexar.se/

In case you are in Windows, and connected to Linux and/or using WSL, you can also use WinDBG/VisualStudio to debug (remotely) Linux processes!