I meant a debugger that doesn't require or expect you to have the source code of the application you're debugging and just shows you disassembly, lets you use i

I meant a debugger that doesn't require or expect you to have the source code of the application you're debugging and just shows you disassembly, lets you use instruction execution/memory access breakpoints, patch instructions, etc. Ghidra doesn't have a debugger yet, but it's a planned feature.