older versions of OF are here:
I should note about eyewriter (since I helped work on it) is that is not supported anymore since it's almost a 10 years old project. eyewriter 2 is more modern, since it was developed a little later, but we don't have the equipment or time to maintain the changes to the code so everything is as-is.
if it's helpful, there are cheap eye tracking solutions now, such as
unfortunately eyetribe is not doing their product anymore, but you might be able to find some of their devices around.