MoarNES is a Nintendo Entertainment System emulator presently in Alpha stage. The few games I tested ran well enough but the sound needs a little more tweaking.
* load/save state from/to files
* quick-save slots (four of them F1 through F4 saves, F5 through F8 loads)
* authentic game genie support (GG ROM is included)
* supports mappers 0, 1, 2, 3, 4, 7, 9, 10, 11, and 13 (i think this covers most of the common ones)