Many companies use this software for editing photos.
I use this for our company work and this works perfectly for image editing process.
Becrux Wally - Wally is a Qt4 wallpaper changer, using multiple sources like files, folders, FTP remote folders, Flickr, Panoramio, Ipernity, Photobucket, Buzznet, Picasa, Smugmug, Google, Vladstudio and deviantART images. Now it's available in many languages!!
GIMP - GIMP is a multiplatform photo manipulation tool.
John's Background Switcher - Switch backgrounds to trending imgur, reddit, tumblr threads
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
Random BackGround - Random BackGround desktop wallpaper slideshow with advanced features for Windows
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.