Giphy Chrome Extension - Respond to emails, tweets & more w/ GIFs in a jiffy
4Gifs.com - Funny Animated GIF archive.
Giphy For Gmail - Add the power of GIFs to your email
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.
YouTube GIF Creator - Turn any video into a GIF directly inside YouTube
Gifyu - Upload GIF Images and Share Pictures Online