Editors
ImageMagick
When a folder of images needs the same resize or format change, ImageMagick can process the files through command-line commands and scripts
GIMP Portable
Photos can be edited and image compositions created with GIMP Portable, straight from a folder you carry between computers
RawTherapee
Shooting in RAW and looking for a free developer for the files
Fotografix
Want to make the sky bluer without turning everything else blue
LazPaint
Need a free image editor with layers that's lighter than GIMP
Tux Paint Portable
When a drawing session needs to move between shared computers, Tux Paint Portable can run from a folder on a USB drive without installing into Windows
PhotoPad Professional
Want one program for photo fixes, effects and collages
Zoner Photo Studio X
Need one place to sort a photo library, edit images, and keep a photography workflow together
Akvis Enhancer
Backlit portrait with a dark face, or a hazy landscape
Pixia
Looking for a free drawing program for anime-style illustration
Twistedbrush Pro
Digital artists and illustrators who are also hobbyists often desire software that provides them space for creativity, even if they are not used to a professional-level workflow or to a workflow that simply forces them to such a level
FaceFilter
Want to smooth skin, add makeup or nudge a smile in a portrait without learning Photoshop
PhotoPad – Photo Editing Software
Need to crop a photo, correct its color, or remove a small distraction
JPEGView
Want a fast image viewer that can also fix a photo on the spot