Many companies use this software for editing photos.
I use this for our company work and this works perfectly for image editing process.
SaaS 1000 - Free exportable list of the fastest growing SaaS companies
GIMP - GIMP is a multiplatform photo manipulation tool.
Look at that SaaS - Inspiration and resources for SaaS founders
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
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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.