VirtualC64 v4.3 is released. VirtualC64 is a C64 emulator for Mac OS X from Dirk W. Hoffmann. VirtualC64 emulates a Commodore 64 personal computer on your Macintosh.

VirtualC64 v4.2 Changelog:
Enhancements
Multiple power-saving options have been added that can considerable increase emulation speed.
Support for hardware-based floppy accelerators has been added (SpeedDOS+, Dolphin DOS V2).



Download: VirtualC64 v4.3
Source: Here