NO$GBA	Windows	Freeware	Rating: 7.6 (7964 Votes)
Gameboy Advance Emulator with multiplayer support. Now Supports Nintendo DS as well.
DeSmuME	Windows	Freeware	Rating: 7.0 (4872 Votes)
iDeaS	Windows	Free	Rating: 6.9 (6902 Votes)
Nintendo DS Emulator
NeonDS	Windows	Freeware	Rating: 6.8 (837 Votes)
Nintendo DS emulator
Dualis	Windows	Free	Rating: 6.2 (1332 Votes)
Nintendo DS emulator
DSemu	windows	Free	Rating: 6.0 (1042 Votes)
Nintendo DS emulator