Many companies use this software for editing photos.
I use this for our company work and this works perfectly for image editing process.
Virtual Magnifying Glass - Virtual Magnifying Glass, a free, open source, screen magnification program for Windows, Linux, FreeBSD and Mac OS X. Free full version download and instructions for use.
GIMP - GIMP is a multiplatform photo manipulation tool.
Magnifixer - Magnifixer is a screen magnifier utility.
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
ZoomIt - Presentation utility for zooming and drawing on the screen.
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.