Hi, author here :)<p>Didn't expect it to be posted, readme maybe doesn't have enough context. It just says "Essential features are there". What are those? Most of what I've ever used in any debugger:<p>* Showing code, disassembly, threads, stack traces, local variables.<p>* Watches, with a little custom expression language. E.g. you can do pointer arithmetic, type casts, turn a pointer+length into an array, show as hex, etc. Access to local and global variables, thread-local variables, registers. Type introspection (e.g. sizeof and offsets of fields).<p>* Pretty printers for most C++ and Rust standard library types. Probably fragile and version-dependent (e.g. fields names often changes across versions), please report when they don't work.<p>* Automatically down-casting abstract classes to concrete classes.<p>* Breakpoints, conditional breakpoints (but no data breakpoints yet).<p>* Stepping: into/over/out a source code line, into/over a disassembly instruction, over a source code column (when there are multple statements one line, e.g. to skip evaluation of arguments of a function call). All places where control can stop (statements) are highlighted in the code, so you usually don't get surprised by where a step takes you. (...except when there's garbage in debug info, and you end up temporarily on line 0 or something. This happens frustratingly often, and there's not much I can do about it. I already added quite a few workarounds to make stepping less janky in such cases. If a step takes you to an unexpected place, it usually under-steps rather than over-steps, so you can just step again until you end up in the correct place.)<p>* Various searches: file by name, function by name, function by address (like addr2line), type by name, global variable by name, thread by stack trace.<p>* Debugging core dumps. There's also a gdump-like tool built in (`nnd --dump-core`) that makes core dump of a running process without killing it; it uses fork to minimize downtime (usually around a second even if there are tens of GB of memory to dump).<p>* Customizable key bindings, see `nnd --help-files` or `nnd --help-state`.<p>* TUI with mouse support, tooltips, etc.