Viewnior is a fast and simple image viewer for GNU/Linux.
WebWatcher
Know when your websites are misbehaving!
KSnip
Ksnip is a Qt based cross-platform screenshot tool that provides many annotation features for your screenshots.
Contrast
Checks whether the contrast between two colors meet the WCAG requirements.
Min Browser
A smarter web browser.
Artha
Artha is a free cross-platform English thesaurus that works completely off-line and is based on WordNet
SteadyFlow
Steadyflow is a GTK+ based download manager that aims for minimalism, ease of use, and a clean, malleable codebase. It should be easy to control, whether from the GUI, command line, or D-Bus.
MKVToolNix
MKVToolNix is a set of tools to create, alter and inspect Matroska files under Linux, other Unices and Windows.
Krfb Desktop Sharing
Krfb Desktop Sharing is a server application that allows you to share your current session with a user on another machine, who can use a VNC client to view or even control the desktop.
gFTP
gFTP is a free multithreaded file transfer client for *NIX based machines with the following features: