Imgur is an online image sharing community and image host.

F-Spot is an unmaintained image organizer, designed to provide personal photo management for the GNOME desktop environment.

Piwigo is photo gallery software for the web, built by an active community of users and developers.

gThumb is an image viewer and organizer with a couple of limited options to also edit images.

GNU MediaGoblin (MediaGoblin or GMG) is a free, decentralized Web platform (server software) for hosting and sharing many forms of digital media.