Many companies use this software for editing photos.
I use this for our company work and this works perfectly for image editing process.
ImBatch - ImBatch is a batch image processor with a nice graphical user interface.
GIMP - GIMP is a multiplatform photo manipulation tool.
Batch Image Resizer - Resize, crop, shrink, flip, exif-rotate, convert, enhance, process multiple pictures and photos with professional software! 120+ Actions, 30+ Image Formats
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
DVDVideoSoft Image Convert and Resize - Free Image Convert and Resize is a compact yet powerful program for batch mode image processing.
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.