Exposure - Turn your pictures into art.
Social Pinboard - Leverage social media by creating Pinterest-like website and help users share beautiful videos...
Known - Publish blog posts, photos and media to your own site, and syndicate it to your social networks. Keep everything on your own site.
Pinry - Pinry is a private, self-hosted, Pinterest inspired by Wookmark and built on top of Django.
ClanShot - Connect and share your pictures with the clan, here you can post and comment the shots of users or...
ClassicPress - The WordPress fork. No Gutenberg. Great future!