Many companies use this software for editing photos.
I use this for our company work and this works perfectly for image editing process.
RawTherapee - RawTherapee is a free RAW converter and digital photo processing software.
GIMP - GIMP is a multiplatform photo manipulation tool.
Darktable - darktable is an open source photography workflow application and raw developer.
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
digiKam - Professional Photo Management with the Power of Open Source
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.