Flickr is a photo-sharing platform for organizing and sharing high-quality images. Imgur offers quick image hosting and sharing, including memes and GIFs. Pinterest allows users to share and organize images into boards. 500px is a platform for photographers to showcase their work and engage with creatives. Shutterstock and Adobe Stock are stock photography platforms where users can sell images. SmugMug offers professional portfolios, secure storage, and print sales. DeviantArt is a creative community for showcasing and selling artwork. Pixabay and Unsplash are free platforms for sharing high-quality, royalty-free images.

Image submission sites allow users to upload, share, and sometimes sell their images. Popular platforms like Imgur and Flickr are used for casual sharing, while Shutterstock and Adobe Stock enable photographers to sell their work. Pixabay and Pexels provide free high-quality images for both personal and commercial use. 500px caters to professional photographers, and DeviantArt offers a creative community for various forms of art, including photography. These platforms serve different purposes, from storing and sharing to monetizing images.