GIPHY for iMessage - The easiest way to share all the GIFs in all your txts
GIFSOM - Create GIFs up to 4 seconds from sources like YouTube, Facebook Videos, TikTok, Twitter, and more in high quality. GIFSOM stores the GIFs absolutely free.
Doll Up Stickers - Dress up your messages.
4Gifs.com - Funny Animated GIF archive.
Bobble Stickers for iMessage - One selfie, Unlimited Stickers!
Gifyu - Upload GIF Images and Share Pictures Online