What are some alternatives?
When comparing Gif Slice and Lively, you can also consider the following products
GifBook - Make animated GIFs into paper flip books
Instagfy - Make a GIF with your most popular photos on Instagram
Print A Gif - Turn any gif into a printable flip book
GIF Brewery by Gfycat - Create stunning GIFs from videos & screen recording for free
Gif Cube - Turn gifs into physical cubes
Clippy - Yes, Clippy from Microsoft Office is back — on macOS!