[Kdbg](https://www.kdbg.org/) is a nice native frontend to the GDB debugger.
However, kdbg is not available in Ubuntu 20.04 anymore. Therefore, to install it on this distribution one needs to compile it from source.
However, kdbg is not available in Ubuntu 20.04 anymore, nor in snap or flatpak repositories. Therefore, to install it on this distribution one needs to compile it from source.