Many companies use this software for editing photos.
I use this for our company work and this works perfectly for image editing process.
GuideGuide - GuideGuide is the Photoshop and Illustrator panel that makes working with guides.
GIMP - GIMP is a multiplatform photo manipulation tool.
Q2ID - Q2ID is an affordable InDesign plugin which allows user to convert and open QuarkXPress documents in Adobe InDesign.
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
phpAlbum - phpAlbum.net is an Open Source PHP script which allows creating personal Photo Album / Gallery
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.