iDeaS is a Nintendo DS emulator. Its compatibility rate is increasing with each release.
System(s): Nintendo DS
OS Supported: Windows
GBA, GBC, NDS, 3DS, N64, SNES, GameCube, Wii Emulators on Windows, MacOS, Android, iOS
Pretendo is a free Nintendo DS emulator that lets you play your favorite DS games on any Android device.
DraStic is much better than nds4droid since it has more features or functions for nearly fully emulating a real NDS.