Have meeting with prospective client on Monday and want to generate small photogrammetric model. Have downloaded Pix4D Capture for flight planning and will go out and fly as soon as fog burns off. However, I need to process the pictures. Don't want to buy the software just to find out it doesn't work for me, Pix4D Discover is apparently no longer offered, so what freeware can I use for now to process pictures and do my demo? 99% chance I will purchase Pix4D for this but don't want to commit until after my Monday meeting. Any suggestions? Thanks.