Many companies use this software for editing photos.
I use this for our company work and this works perfectly for image editing process.
Focos - Your Portrait Mode photos become amazing masterpieces of art
GIMP - GIMP is a multiplatform photo manipulation tool.
Lightsynth - The first camera which supports mobile ADR - Adaptive Dynamic Range, Lightsynth lets you have done with all kinds of exposure trouble under various tricky lighting situations such as daylight skies, backlit, or low-light.
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
Manual Camera for iPhone - Custom exposure for your iPhone camera
Krita - Krita is a professional FREE and open source painting program. It is made by artists that want to seaffordable art tools for everyone. Concept art. texture and matte painters, illustrations and comics.