Animated GIF Gallery Viewer

Viewing a folder of animated GIFs on Windows or macOS is miserable — thumbnails don't move and viewers show one file at a time. Animated GIF Gallery Viewer opens a folder in your browser and plays the entire collection at once in a scrollable grid. Zoom to 20x, pause any GIF at the exact frame you're looking at, step frame by frame, and stay smooth across thousands of files. Free, no install, and nothing ever leaves your machine.