Some time ago, a problem reported showed Zeus would fail to debug D code when using the GDB debugger. That issue related to the fact the version of GDB shipped with Zeus was outdated.
The latest release of Zeus now ships with the version 14.1 of GDB.
That means Zeus and GDB should now work with the D compiler, provided it produces DWARF symbolic information. The link below describes how the LDC compiler can be used to debug a D program using Zeus:
https://www.zeusedit.com/phpBB3/viewtopic.php?t=8358
NOTE: The Zeus debugger should also work with any compiler that can produces DWARF symbolic information as this comes down to what symbolic information is supported by GDB. One final note, Zeus is shareware and it is designed to run on the Windows platform.