I have no idea what they wrote it in.

I do know that it is VERY VERY VERY FAST!

I am about to market an application that stores images in memo fields. Initially I was using general fields but navigating between rows with very large
bmp's was taking 20 seconds on a pentium 133mhz. Now, with ImagN, it is instantaneous. These guys wrote it so that the image loading occurs in the
background. I have purchased the full blown system and signed a license agreement with them.

I wish Microsoft could write something this fast and embedd it within VFP 6.0.

These guys are incredible.