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.
Cluster - A beautiful and easy way to collect and view inspiration
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
Notabli for the Web - Childhood, privately shared & effortlessly organized
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.
Flashgap - Time-delayed photo-sharing app of last night's embarrassment