Many companies use this software for editing photos.
I use this for our company work and this works perfectly for image editing process.
Micro Work 4 all - New Website aiming to get more workers and job seekers to perform tiny task and make money.
GIMP - GIMP is a multiplatform photo manipulation tool.
Picoworkers - Earn money from doing short, easy tasks similar to Microworkers. Picoworkers is the best alternative to Microworkers I ever find.
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
Amazon Mechanical Turk - The online market place for work.
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.