GIMP - GIMP is a multiplatform photo manipulation tool.
Flickr - image and video hosting website
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
Imgur - Imgur is a free and simple image hosting service with image editing feature. Signup is optional.
Pixlr - Pixlr® makes it easy to transform everyday images into stunning works of art.
PhotoPrism.app - PhotoPrism® is an AI-Powered Photos App for the Decentralized Web. It makes use of the latest technologies to tag and find pictures automatically without getting in your way. You can run it at home, on a private server, or in the cloud.