Nemus is an accurate, efficient, and portable Nintendo Entertainment System emulator, written in C++ conforming to the ISO/IEC 14882 standard. We are currently looking for help on the project, so if you are interested, please contact the maintainer.
Xcpc is a portable Amstrad CPC464/CPC664/CPC6128 Emulator written in C designed to run on any POSIX system (Linux/BSD/UNIX-like OSes) ...
My Nes is a handy, easy-to-use NES / FAMICOM emulator written in C#. At this time, it covers the popular games and it closed to cover over than 1000 games.
A8E is a freeware Atari 800 XL emulator written in C by Sascha Springer and has been developed completely from scratch. It uses the SDL and OpenGL (optional) library for the user interface and the audio and graphics output.
An Atari 2600/7800 emulator written in C#.
A 6502 Emulator written in C, that will support Apple II and possibly other 6502-based systems.
A Win32 Mac OS emulator written in C (with some inline assembly). Emulation accuracy surpasses (nearly) all other known MAC emulators. Uses plugins for emulation of mac-specific hardware (mappers).
A Win32 NES emulator written in C++ with inline assembly optimizations. Emphasis is on precision rather than speed. Uses DLL plugins for 'mappers' (supports .NES/.UNIF/.FDS/.NSF). Latest builds can be found at home page.
A MapleStory server emulator written in C#, with many possibilities of customizing such as scripting. JLMS 1.0 License - GNU General Public License (GPL)
Sharpulator is a multithreaded, test-driven electronics emulator written in C# 4.0. It's initial focus will be on emulating gaming consoles, with the GameBoy as a starting point. It will be written using modern software development methodologies, with the TPL Dataflow library as a backbone....