Adobe Photoshop
PaintShop Pro
CorelDRAW
ACDSee
Picasa
Windows Live Photo Gallery
Zoner Photo Studio
Adobe Photoshop Lightroom
ACDSee Photo Manager
CorelDraw Graphics Suite
Corel PaintShop Pro
FastStone Image Viewer
FastPictureViewer Professional
XnView
Adobe DNG Converter
Adobe Photoshop Camera Raw

darktable

Picasa
Adobe Photoshop
ColorStrokes
iPhoto
Apple Aperture