My Boy! is not available for Mac but there are plenty of alternatives that runs on macOS with similar functionality. The best Mac alternative is RetroArch, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to My Boy! and 13 are available for Mac so hopefully you can find a suitable replacement. Other interesting Mac alternatives to My Boy! are VisualBoyAdvance, mGBA, OpenEmu and Visual Boy Advance-M.
A fast, modular emulator frontend offering portability and extensive support for systems from arcade consoles to mobile platforms, featuring game engines like Doom and Quake, and capabilities for real-time rewinding and shader support on a variety of devices.
VisualBoyAdvance (VBA) is a free software (GNU GPL) emulator targeted for the Game Boy, Super Game Boy, Game Boy Color, and Game Boy Advance handheld game consoles sold by Nintendo.
mGBA is an open source emulator of the Game Boy Advance. The goals are speed and accuracy.
Open Emu is an open source project to bring game emulation to OS X as a first class citizen, leveraging modern OS X technologies such as Cocoa, Core Animation and Quartz, and 3rd party libraries like Sparkle for auto-updating.
VisualBoyAdvance (commonly abbreviated as VBA) is a free emulator of the Game Boy, Game Boy Color, and Game Boy Advance handheld game consoles as well as of Super Game Boy and Super Game Boy 2.
Ares, which apparently replaced higan, was formerly known as bsnes. The project was renamed after becoming a multi-system emulator.
SkyEmu is a low level GameBoy, GameBoy Color and Game Boy Advance emulator. Its primary focus is to provide a good user experience through a good mixture of tradeoffs of accuracy, performance, features and usability.
MESS emulates portable and console gaming systems, computer platforms and calculators. The project strives for accuracy and portability and therefore is not always the fastest emulator for any one particular system.
A front-end or user interface (UI) is the presentation and interaction layer of an app or website. Most modern emulator apps have basic game list UIs that you can interact with using a mouse/keyboard but not a game controller.
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![Cemu (Wii U) [Windows & Linux* using Wine]](https://d4.alternativeto.net/u7syed6DDt9vtpLF3__xWFz7OJsg5ngAPJOiaVd-vKk/rs:fill:309:197:1/g:no:0:0/YWJzOi8vZGlzdC9zL2JvdHRsZW5vc2VfNzYyMjEwX2Z1bGwucG5n.png)
![Yuzu (Switch) [Linux & Windows]](https://d4.alternativeto.net/NpQe1KMfGJaPv0qm1w6liimMFXHDQ1jjBd90pDaCnqU/rs:fill:309:197:1/g:no:0:0/YWJzOi8vZGlzdC9zL2JvdHRsZW5vc2VfNzg1NDQ5X2Z1bGwucG5n.png)
![Citra (3DS) [Linux, macOS, & Windows]](https://d4.alternativeto.net/z1PLFBsUocfV6wZ3uPouYjwzGUERZcOifOAu5qqbUbA/rs:fill:309:197:1/g:no:0:0/YWJzOi8vZGlzdC9zL2JvdHRsZW5vc2VfNTA5OTYxX2Z1bGwucG5n.png)
KiGB is the most accurate and free portable emulator for Gameboy, Gameboy Color and Super Gameboy for Windows, Linux and MS-DOS.
BoycottAdvance is a free and portable emulator for the Nintendo Gameboy Advance handheld. Program is available on Windows, Macintosh, BeOS, Linux, FreeBSD and there is even a Java port, playable online.
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It is very similar and great to use!