PixelFed - PixelFed is a federated image sharing platform, powered by the ActivityPub protocol.
DragNDropz - DragNDropz offers free image and file hosting. Create image galleries, edit and organize photos, share files, move uploaded files into folders, and more.
Belacam - Turn your Photos into Cash.
IrfanView - IrfanView ... one of the most popular viewers worldwide.
Websta for Instagram - Best App for Instagram. See your news feed, like, comment and browse all your friends photos.
PostImage.org - Provides free image upload and hosting integration for forums.