Trigraphy - Photo editing app that allows you to make mosaic/abstract looking art.
GIF Brewery by Gfycat - Create stunning GIFs from videos & screen recording for free
Dreamscope - Make and share 'deep dream' images using dozens of supplied styles or your own.
Live GIF - Convert live photos to GIF
Photomosh - Turn anything into a vaporwave
Free GIF Maker - Make GIF from Screen, Video Files and Online Video