Ristretto
Scribus
Shotwell
Simple Image Reducer
Document Scanner
SolveSpace
Structure Synth
Sunflow
Swayimg
Sweet Home 3D
Sweet Home 3D Furniture Library Editor
Sweet Home 3D Textures Library Editor
Tesseract-Trainer
TikZiT
Trimage image compressor
Tupi: 2D Magic
TypeCatcher
ucrpf1host
Valentina
view3dscene
Viewnior
xfig
XPaint
xpdf
XSane
