Gab - Gab is an ad-free social network dedicated to free speech.
500px - Connect, get inspired, and grow your skills.
Friendica - Decentralisation - Privacy - Interoperability
picinfinity - Picinfinity is an image retaining/proxy site.
PixelFed - PixelFed is a federated image sharing platform, powered by the ActivityPub protocol.
Flickr - image and video hosting website