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.
GoldenHour.One - Your personal assistant for outdoor photography for iOS
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
Retinize It - Photoshop actions for preparing designs for iOS or optimize
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.
CSS Hat - Turn layers from Photoshop CC 2014 to code instantly.