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| style="text-align: center;"|[[FCEUX]]| style="text-align: center;"|Windows, Linux, macOS, Solaris, BSD| style="text-align: center;"|2.2.3| style="text-align: center;"|High| style="text-align: center;"|✓ | style="text-align: center;"|✓ | style="text-align: center;"|✓ | style="text-align: center;"|✓| style="text-align: center;"|✓ | style="text-align: center;"|✓ | style="text-align: center;"|✓ | style="text-align: center;"|✓ | style="text-align: center;"|✓ | style="text-align: center;"|✓ | style="text-align: center;"|✓ | style="text-align: center;"|✓✓
| style="text-align: center;"|[[Snes9x]]| style="textMulti-align: center;"|Windows, Linuxplatform| style="text-align: center;"|Gieger's r1.51| style="text-align: center;"|High| style="text-align: center;"|✓ | style="text-align: center;"|✓ | style="text-align: center;"|✓ | style="text-align: center;"|Address| style="text-align: center;"|✗ | style="text-align: center;"|✓ | style="text-align: center;"|✗ | style="text-align: center;"|✓ | style="text-align: center;"|✓ | style="text-align: center;"|✗ | style="text-align: center;"|✗ | style="text-align: center;"|✓✓
| style="text-align: center;"|[[BizHawk]]| style="text-align: center;"|Windows, Linux| style="text-align: center;"|Main| style="text-align: center;"|Cycle| style="text-align: center;"|✓ | style="text-align: center;"|✓ | style="text-align: center;"|✓ | style="text-align: center;"|Range| style="text-align: center;"|✗ | style="text-align: center;"|✓ | style="text-align: center;"|✗ | style="text-align: center;"|Read-only| style="text-align: center;"|✓ | style="text-align: center;"|✓ | style="text-align: center;"|✗ | style="text-align: center;"|✓
| style="text-align: center;"|[[No$|NO$SNS]]| style="text-align: center;"Windows, [[Intel CPUs|WindowsDOS]]| style="text-align: center;"|1.6| style="text-align: center;"|Mid| style="text-align: center;"|✗ | style="text-align: center;"|✗ | style="text-align: center;"|✗ | style="text-align: center;"|Address| style="text-align: center;"|✗ | style="text-align: center;"|✓ | style="text-align: center;"|✗ | style="text-align: center;"|✓ | style="text-align: center;"|✓ | style="text-align: center;"|✓ | style="text-align: center;"|✓ | style="text-align: center;"|✓
===Emulators===
{| class="wikitable" style="text-align:center;"
|+NES
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! scope="col"|Useful?
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* '''FCEUX''' is the golden standard for emulator debuggers, it's a fully featured one and very newbie friendly. So please check it out even if you're not interested in NES games as it's an excellent starting point for game modding. It's one of the few emulators, alongside PCSX2 and PPSSPP, to include conditional breakpoints.
{| class="wikitable" style="text-align:center;"
|+SNES
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! scope="col"|Useful?
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* Older '''bsnes''' versions, and many of its forks - notably BizHawk and Marmelade, have an extensive VRAM viewer, some versions having ones topping NO$SNS, as well as a memory viewer. byuu says he wants to make a proper debugger himself called Loki (citing this as the reason for putting on hiatus the FEOE:Zero translation) but don't hold your breath for it.
* Geiger's custom build of an older version of Snes9X Snes9x also is very useful. While the base emulator only has a background layer disabling hotkeys, cheat codes and frame advance features, this build adds a debugger, a tracer (to a log file), as well as a memory viewer/editor with the option to dump to external files to open with hex editors. There's also the very useful "What's Used" feature which colors areas in the memory viewer depending on what's onscreen (controllable with the BG layer hotkeys). However, it doesn't play nicely with nonstandard SNES cartridges. There's another custom Snes9X Snes9x build by FuSoYa for Super FX2 games.
* As for '''NO$''' emulators, right off the bat when you start it, they have a fully editable debugger (upper-left), RAM memory viewer (lower-left), hardware register (upper-right) and stack (lower-right). You can set breakpoints on addresses or programming lines (opcodes). You can view I/O status (for stuff like sound and DMA) with the F10 hotkey.
