Access, organize and share your photos on GNOME. A simple and elegant replacement for using a file manager to deal with photos. Enhance, crop and edit in a snap. Seamless cloud integration is offered through GNOME Online Accounts.
Deepin Image Viewer
A simple Image Viewer
Viewnior
Viewnior is a fast and simple image viewer for GNU/Linux.
KSnip
Ksnip is a Qt based cross-platform screenshot tool that provides many annotation features for your screenshots.
GottenGeography
An easy to use geotagging application for the GNOME desktop, which aims to have a very streamlined and intuitive interface that makes it easy to apply geotags to photographs.
Su'e Iole
BitTorrent P2P multi-platform search engine for Desktop and Web servers with integrated torrent client.
Deepin Draw
Lightweight and simple drawing tool
Pogisa laulau
darktable is an open source photography workflow application and raw developer
aMule
aMule is an eMule-like client for the eD2k and Kademlia networks, supporting multiple platforms.
Currently aMule (officially) supports a wide variety of platforms and operating systems, being compatible with more than 60 different hardware+OS configurations.
aMule is entirely free, its sourcecode released under the GPL just like eMule, and includes no adware or spyware as is often found in proprietary P2P applications.
Trimage
Trimage is a cross-platform GUI and command-line interface to optimize image files for websites, using optipng, pngcrush, advpng and jpegoptim, depending on the filetype (currently, PNG and JPG files are supported). It was inspired by imageoptim. All image files are losslessy compressed on the highest available compression levels, and EXIF and other metadata is removed. Trimage gives you various input functions to fit your own workflow: A regular file dialog, dragging and dropping and various command line options.