Another thing that's not working for me in DOSBox-X but does work on regular DOSBox is "Dos Navigator". The open-source version. The real-mode version crashes upon launch DOSBox-X.
Not sure if DN is available for any wide spread operating system at the moment, but maybe Far Manager is something you would like to try.
P.S. Well, dn is available for Windows here, though it doesn't work properly at the moment.