Many companies use this software for editing photos.
I use this for our company work and this works perfectly for image editing process.
miniPaint - Online graphics editing tool use HTML5 technologies like Canvas, Offline support, Drag and Drop.
GIMP - GIMP is a multiplatform photo manipulation tool.
JugiPaint - JugiPaint is a painting software with diverse tools for various types of illustration work.
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
Ultimate Paint - Ultimate Paint is a full-featured 32-bit Windows graphics program for image creation, viewing and...
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.