Photobucket - Photobucket offers image hosting and free photo and video sharing.
Inkbunny - Helping furry artists and story-tellers share their work.
Imgur - Imgur is a free and simple image hosting service with image editing feature. Signup is optional.
The Artling - The Artling is an all-in-one curated online artwork gallery that has been providing people from across the globe with unique designs.
imgbox - Imgbox is a free image hosting service.
Weasyl - Open-source social art gallery