melonDS

The software emulates the Nintendo DS and DSi hardware, providing a near‑complete implementation of the system’s CPU, video, audio and peripheral components. It includes a just‑in‑time recompiler for speed and an OpenGL renderer that supports 3D upscaling. Features such as real‑time clock, microphone input, lid open/close detection, joystick mapping, savestates, and various display positioning and rotation options are available, with additional capabilities like local Wi‑Fi multiplayer and online connectivity under development.

Target users are developers and enthusiasts who need to run DS/DSi titles on macOS with accurate timing and performance. The emulator’s architecture allows for detailed debugging and experimentation with the console’s hardware behavior, making it suitable for both casual gameplay and more technical exploration.

What distinguishes it is the combination of a JIT‑based core for fast execution, an OpenGL‑based graphics pipeline, and ongoing work to extend functionality to DSi‑specific features, Wi‑Fi multiplayer, and GBA slot add‑ons, all within a stable release that runs on macOS.