nesdev.com

I haven't done much debugging lately, but Mesen seemed pretty cool when I gave it a try. I think it has everything FCEUX does, and more. I sincerely do want to use it more.

I've been trying to fill in the last few missing features that exist in FCEUX but not Mesen. With Lua scripting available in 0.9.2, I think I've mostly covered everything. The things I can still see as missing would be the TAS Editor and Text Hooker (both of which aren't really debugging tools). FCEUX's "RAM Search" feature is not completely available, but the cheat finder in Mesen does give a decent subset of that functionality for now. Eventually, I'd like to add a system of taking memory snapshots & being able to select any 2 snapshots to compare them - which should take care of that functionality gap.