Many companies use this software for editing photos.
I use this for our company work and this works perfectly for image editing process.
RealWorld Photos - RealWorld Photos is an free portable photo editor for Windows.
GIMP - GIMP is a multiplatform photo manipulation tool.
Online Image Editor - Online editor for images and animated gifs with multiple effects and tools
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
SoftColor PhotoEQ - SoftColor PhotoEQ makes color correction, image editing and color management tasks simpler.
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.