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.
Bizness Apps - Create your own app or become a reseller and build apps for others
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
Siberian CMS - Siberian is an Open-Source and Free App Maker. Unlimited Push Notifications. Unlimited features. Fully Customizable. Download it and build your own app now!
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.
Dropsource - Mobile development platform for building native iOS & Android apps