Utilities

MediaInfo is a free and open source graphical utility for viewing information from audio/video files

GNOME Clocks is a free and open source simple program that includes world time, alarm clocks, stopwatch, and timer

Identity – free and open source program for comparing multiple versions of an image or video

Contrast is a free and open source utility for checking color contrast compliance with WCAG requirements

Kontrast – free and open source utility for checking the contrast of colors

KShutdown – free and open source, multiplatform graphical utility for shutdown computer

ClamTk – frontend for ClamAV for the free and open source ClamAV antivirus, simple and light-weight, on-demand virus scanner for Linux

Brightness Controller – free and open source, simple utility to control brightness, RGB, and color temperature of displays in Linux

Y PPA Manager – free and open source graphical software for managing PPA repositories

Etcher – free and open source, cross platform and simple software for safe image writing to SD cards and USB drives