ezgif.com - Ezgif.com is simple online gif maker and toolset for basic animated gif editing.
ImageMagick - ImageMagick is a software suite to create, edit, and compose bitmap images.
Instagiffer - Create GIFs from anything!
OpenCV - OpenCV is the world's biggest computer vision library
Gifox - Delightful GIF Recording and Sharing App for macOS
Cloudinary - Cloudinary is a cloud-based service for hosting videos and images designed specifically with the needs of web and mobile developers in mind.