What are some alternatives?
When comparing glitchi and MVGEN, you can also consider the following products
generative.app - Transform your images into compelling algorithmic art
Photomosh - Turn anything into a vaporwave
Pixus - Pixus is an AIR pixel ruler application, a handy tool for web and interface designers.
Glitchatron - Destroy your favorite photos
Glitch Wizard - Create trippy glitch photos and animated GIFs
Tumblr Music Video Generator - turn Tumblr accounts into music videos