Many companies use this software for editing photos.
I use this for our company work and this works perfectly for image editing process.
vu - Dead simple Instagram client for Mac
GIMP - GIMP is a multiplatform photo manipulation tool.
4K Stogram - Free Instagram Downloader for macOS, PC and Linux. Search, download or backup Instagram photos shared by any user. Follow your favorite photographers and stay tuned!
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
Uplet - Uplet is an easy-to-use bulk Instagram uploader for Mac.
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.