Many companies use this software for editing photos.
I use this for our company work and this works perfectly for image editing process.
GNS3 - GNS3 is a graphical network simulator that allows simulation of complex networks.
GIMP - GIMP is a multiplatform photo manipulation tool.
ns-3 - a discrete-event network simulator for internet systems
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
NetSim - NetSim software was created to simulate various Cisco systems. Cisco software is known around the world as being one of the best network, routing and switch systems for businesses and private use. Read more about NetSim.
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.