Cemu is a Wii U emulator
BizHawk is a multi-system emulator written in C#
Emulator of x86-based machines based on PCem
DOSBox Staging is a modern continuation of DOSBox
Hangover runs simple Win32 applications on arm64 Linux
Emulator that can run 32-bit Windows programs/games
A GUI based Nintendo Switch Bootloader
Video game library manager with support for wide range of libraries
Building a full-fledged code editor for iPad
The original IBM PC and other machine emulations in JavaScript
Game Boy and Game Boy Color emulator written in C
An Open Source OS, based on Android for PC's & Tablets
Bitcoin thin client for iOS & Android. Built with React Native
A latency-hating emulator of: the Acorn Electron, BBC Micro
Full-stack testing PHP framework
8080/6800/6502/Z80/8086 emulator, arcade emulator, CP/M emulator
LaserGRBL Linux solution, LaserGRBL is one of the best software.
Embedded by examples
V.Smile emulator written in C, C# and XAML
a DOS TSR that emulates a floppy disk drive over ethernet
Linux ISO Thinkpad E15
Qt-based Apple //e emulator, in C++
Yuzu - Nintendo Switch Emulator