Many companies use this software for editing photos.
I use this for our company work and this works perfectly for image editing process.
Gumlet - Gumlet is an end-to-end video streaming and image delivery platform
GIMP - GIMP is a multiplatform photo manipulation tool.
ShortPixel - Speed up your website by optimizing the images.
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
Imagify - Optimize and resize images online and through your CMS.
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.