Gif Resizer by RedKetchup - Crop and resize an animated GIF online. Cut out GIF frames, adjust play speed, or fill the background with color. Optimize GIF for high-quality or smallest file size.
ezgif.com - Ezgif.com is simple online gif maker and toolset for basic animated gif editing.
IrfanView - IrfanView ... one of the most popular viewers worldwide.
Gifox - Delightful GIF Recording and Sharing App for macOS
Gifsicle - Gifsicle is a powerful, simple command line tool for creating, editing, and optimizing animated GIFs.
Instagiffer - Create GIFs from anything!