The editor for Pi Presents (pp_editor.py) has and will always run on other Linux machines and on Windows. However running Pi Presents itself on other machines is less easy primarily because of its use of omxplayer which is a Pi specific way of playing videos and the Pi specific gpio.
Recently drewkeller has used that fork to produce a version that runs under Linux Mint in virtualbox on Windows 8. It should also run under other Linux’es natively, maybe with a little work. Running natively under Windows will I suspect take considerably more work. His writeup and link to his fork are here
I searched the Internet to see if mpv Player would run on the Raspberry Pi. The answer appears to be yes, but slowly.