Mockuuups Studio - Fast and easy way to create product mockups on macOS, Windows and Linux.
Micro Work 4 all - New Website aiming to get more workers and job seekers to perform tiny task and make money.
Mediamodifier - Create beautiful designs and product mockups in seconds.
Picoworkers - Earn money from doing short, easy tasks similar to Microworkers. Picoworkers is the best alternative to Microworkers I ever find.
Design Camera - Drag and drop 3D mockups
Amazon Mechanical Turk - The online market place for work.