Frodo is a freeware C64 emulator for BeOS, Unix, MacOS, AmigaOS, Win32 and RiscOS systems and the world's first C64 emulator not bearing a "64" in its name. :-)
Frodo was developed to reproduce the graphics of games and demos better than the existing C64 emulators. Therefore Frodo has relatively high system requirements: It should only be run on systems with at least a PowerPC/Pentium/68060. But on the other hand, Frodo can display raster effects correctly that only result in a flickering mess with other emulators.