BueniaDev

libmbGB

Game Boy (Color) emulation library, sorta

BeeKonami

Konami custom IC emulation engine, kinda

Botsashi

Motorola 68000 emulation engine, kinda

melonDS

DS emulator, sorta

libmbmeteor

Game Boy Advance emulation library, sorta

Arcade-TMNT_MiSTer

ares

the ares multi-system console emulation suite

Bee65816

WDC 65816 emulation library, sorta

Bee8051

Intel 8051 family emulation engine, kinda

Bee8080

Intel 8080 emulation library, kinda

BeeARM

ARM emulation engine, sorta

BeeMIPS

MIPS emulation library, kinda

BeeNuked

Yamaha FM sound chip emulation cores, kinda

BeePROM

EEPROM emulation cores, kinda

BeeRISC

RISC-V emulation engine, kinda

BeeRTC

Real-time-clock emulation cores, kinda

BocchiYM

Cycle-accurate Yamaha FM sound chip emulators, kinda

Botnami

Motorola 6809 emulation engine, sorta

GBEmulatorShootout-mbGB

Daid's GBEmulatorShootout, now with support for libmbGB!

genemu

Basic Genesis / MegaDrive Emulator

Kujo68K

Cycle-accurate M68000 emulation library, kinda

libblueberrn

Arcade machine emulation library, kinda

libblueberrn-old

Arcade machine emulation library, sorta

libmbsnes

Super Nintendo emulation library, kinda

pce

PC simulator/emulator targeting a range of systems from 8086 through to Pentium, written in C++

pcem

PCem

RakitaASIC

Reverse engineering of custom ASICs from silicon, kinda

RakitaFrame

Common framework for Verilog development, kinda

RakitaLog

Verilog reimplementations of various historical circuits, kinda

TailDSP

DSP emulation engine, kinda