Denise 1.04 is a relatively new Commodore 64 Emulator - (https://sourceforge.net/projects/deniseemu/) - Words from the author:
Denise is a cycle accurate and platform independant c64 / amiga emulator.My motivation for this project is understanding how it works and write clean and easy readable code.I dont't sacrifice accuracy or code readability for excecution speed, so you need a fast machine to get it fullspeed.The project is influenced by the design of the emulator higan.I have reached the second checkpoint in my personal retro trip. Denise now supports Light Guns/Pens, GunStick, Mouse 1351, Mouse Neos, Paddles.Denise consists of 4 main modules."guikit", "driver", "emulation" could be used in any other project. "program" links these modules together.