Many companies use this software for editing photos.
I use this for our company work and this works perfectly for image editing process.
GIMP - GIMP is a multiplatform photo manipulation tool.
Ashampoo Slideshow Studio HD - Ashampoo Slideshow Studio HD 4 turns your images into vibrant slideshows with cool effects.
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
Photostage - Quickly and easily combine photos and videos with a narration or soundtrack using PhotoStage slideshow software. Free slideshow maker download for Mac & PC.
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.
4K Slideshow Maker - Free app to create slideshows.