Many companies use this software for editing photos.
I use this for our company work and this works perfectly for image editing process.
Split Pic - Clone yourself and create collages!
GIMP - GIMP is a multiplatform photo manipulation tool.
DMD Clone - The easy way to clone yourself.
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
Clone Camera - Clone yourself by combining multiple photos.
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.