Gifsicle is described as 'command-line tool for creating, editing, and getting information about GIF images and animations. Making a GIF animation with gifsicle is easy' and is an app in the OS & Utilities category. There are more than 25 alternatives to Gifsicle for a variety of platforms, including Windows, Mac, the Web, Linux and BSD. The best alternative is ImageMagick, which is both free and Open Source. Other great apps like Gifsicle are ImageOptim (Free Personal, Open Source), ezgif.com (Free), GraphicsGale (Free) and LunaPic (Free).