Lemuroid is a free and open-source Libretro-based, all-in-one emulator frontend for Android platform, developed by Filippo Scognamiglio (Swordfish90) from Italy in 2020. It's designed to work on a wide range of Android devices (from phones to TVs) with the best user experience.

redream is a small but very powerful Sega Dreamcast game console emulator for Windows, Mac, Linux, Raspberry Pi and and Android platforms. It enables you to play your favorite Dreamcast games in high-definition rendering, and re-experience the Dreamcast anywhere you go.

Playing all kinds of old but classic emulator games on our computer has been no longer a difficult task for long, since there are so many dedicated emulators available. However, the downside is that to play games for different consoles you have to run specific emulators separately. This makes us feel cumbersome and inefficient. This is where the emulator frontends like GameEx come in, which is built to serve as a universal interface for most game emulators in existence.

Mesen is a free and open-source Famicom (NES) and Famicom Disk System (FDS) game console emulator for Windows and Linux platforms, written in C++ and C#. Besides, it is also available as a Libretro core for RetroArch. In terms of emulation accuracy, it has surpassed puNES. And it has good compatibility, even many localized games are perfectly supported.

MAME is arguably the best arcade emulator out there. Although it only supported CLI (Command Line Interface) at the beginning, and now it has a DOS-like operation Interface and supports mouse operation, but its usability is still very low, and it never provides GUI (Graphical User Interface). That's where a third-party GUI frontend like MAMEUI comes in.