Many companies use this software for editing photos.
I use this for our company work and this works perfectly for image editing process.
Spine - Spine is 2D animation software designed specifically for software and game development.
GIMP - GIMP is a multiplatform photo manipulation tool.
Synfig Studio - Just another WordPress site
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
Live2D Cubism - Live2D is the world's first drawing technology to enable 3D rendering of 2D images.
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.