Many companies use this software for editing photos.
I use this for our company work and this works perfectly for image editing process.
GitHub - Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.
GIMP - GIMP is a multiplatform photo manipulation tool.
GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
BitBucket - Bitbucket is a free code hosting site for Mercurial and Git. Manage your development with a hosted wiki, issue tracker and source code.
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.