Many companies use this software for editing photos.
I use this for our company work and this works perfectly for image editing process.
Creative Market - Buy and sell handcrafted, mousemade design content like vector patterns, icons, photoshop brushes, fonts and more at Creative Market.
GIMP - GIMP is a multiplatform photo manipulation tool.
SocialSizes - Sketch templates for sharing images & videos on social media
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
Headers.me - Create social cover images that get you followers
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.