GIFMaker for Mac - GIFMaker – Created a GIF from a video or Images is the easiest way to create an animated GIF on your Mac.
Felt for iPhone - Handwritten cards for the modern world
Giphy - Search all the gifs and make your own animated gif
Handwrytten - Handwritten notes straight from your device. Huge selection of cards or design your own. Handwriting service integrates with 1000's of apps.
GIPHY Says - Turn your words into animated GIFs!
43 Layers - Marketplace for custom gifts and decorations