Paintbrush
Tux Paint
Download Tux Paint for free. An award-winning drawing program for children of all ages. Tux Paint is a free, award-winning drawing program originally created for children ages 3 to 12, but enjoyed by all! It combines an easy-to-use interface, fun sound effects, and an encouraging cartoon mascot who guides children as they use the program.
PICSimLab - Prog. IC Simulator Lab.
Download PICSimLab - Prog. IC Simulator Lab. for free. PICSimLab is a realtime emulator for PIC, Arduino, STM32, ESP32, ... PICSimLab is a realtime emulator of development boards with MPLABX/avr-gdb debugger integration. PICSimLab supports microcontrollers from picsim, simavr, uCsim, qemu-stm32, qemu-esp32, and gpsim.
Hugin - Panorama photo stitcher
Mapivi
Martin's Picture Viewer
mtPaint
Pixelitor
An open source image editor
UFRaw
The Unidentified Flying Raw conversion utility
Pencil Planner
Download Pencil for free. Cross-platform 2D animation software. Pencil is a cross-platform open-source 2D animation software. Its first aim is to make traditional animations (cel, cartoons, etc).