Many companies use this software for editing photos.
I use this for our company work and this works perfectly for image editing process.
HoDoKu - HoDoKu is a sudoku helper written in Java and available in English and German.
GIMP - GIMP is a multiplatform photo manipulation tool.
Simple Sudoku - Freeware Sudoku Puzzle Maker and Solver
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
nsudoku - A Sudoku game made with ncurses.
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.