Many companies use this software for editing photos.
I use this for our company work and this works perfectly for image editing process.
Visily - The easiest and most powerful wireframe software for agile teams.
GIMP - GIMP is a multiplatform photo manipulation tool.
PSD to Sketch Design Converter - Convert a Photoshop design to a layered Sketch file for free
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
Learn SpriteKit by Design+Code - Make a platformer iPhone game from scratch in Swift 4.
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.