Many companies use this software for editing photos.
I use this for our company work and this works perfectly for image editing process.
Vector Magic - Easily convert JPG, PNG, BMP, GIF bitmap images to SVG, EPS, PDF, AI, DXF vector images with real full-color tracing, online or using the desktop app!
GIMP - GIMP is a multiplatform photo manipulation tool.
Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
potrace - Open source program that transforms bitmaps into vector graphics.
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.