This image, entitled mosca.gif, was made in GIMP. GIMP is a free to use program that is a great place to start if you want to dip your toes in animation waters. It utilizes a simple frame-by-frame animation system that you can see here. When using GIMP, it’s clear you get what you pay for. The motion lines in this gif were not drawn in by me and it should be a clean animation of a little fly flying around but when I saved it, these weird lines appear. For people that are serious about animation, it might be worth it to just invest in a better animation program.