Many companies use this software for editing photos.
I use this for our company work and this works perfectly for image editing process.
Retrobatch - Retrobatch is a unique application for automating actions to tens, hundreds, and even thousands of images at the same time
GIMP - GIMP is a multiplatform photo manipulation tool.
FastPictureViewer - A hardware-accelerated image viewer for the modern Windows platform.
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
AYVY - JPEG/PNG/RAW Images viewer
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.