Many companies use this software for editing photos.
I use this for our company work and this works perfectly for image editing process.
GIMP - GIMP is a multiplatform photo manipulation tool.
piZap - Free online photo editing software.
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
Fun Photo Box - FunPhotoBox is a free photo editing device where you can make clever pictures from your photographs.
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.
Editor.Pho.to - Need to have the capacity to edit your photos on the web, for nothing and without learning convoluted interfaces? At that point Editor.