Download of gpsim-0.30.0-setup.exe (gpsim-0.30.0-setup.exe ( external link: SF.net): 10,037,225 octetos) will begin shortly. If not so, click link on the left.
gpsim is an open sourced simulator for Microchip's PIC microcontrollers. It supports all three families of PICs: 12-bit, 14-bit, and 16-bit cores. See also gputils http://gputils.sourceforge.net/