Many companies use this software for editing photos.
I use this for our company work and this works perfectly for image editing process.
GIMP - GIMP is a multiplatform photo manipulation tool.
Milanote - Milanote is a note taking app for creative work.
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
ScribbleBoard - iOS8 Keyboard for hand drawing your messages
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.
Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.