Retromac is described as 'RetroMac is a macOS menu bar app that transforms your Mac into a fully customizable retro computer, with live CRT shaders and era-specific desktop themes' and is an app in the office & productivity category. There are 2 alternatives to Retromac for a variety of platforms, including Mac, Windows, Linux, Web-based and Android apps. The best Retromac alternative is RetroArch, which is both free and Open Source.
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.
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.
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