Everyday Jigsaw is a Mac tool that gives you access to large collection of puzzles. Besides letting you solve various puzzles of different difficulty levels, this program also enables you to create your own jigsaws by using pictures from your local directories and selecting the preferred level settings.
The utility is packed with various challenges, provides you with plenty of useful instructions, and gives you access to gameplay hints.
Another great thing is that you can use this tool to create your own puzzles. You can import images of various formats from your local folders, select the preferred style and amount of puzzle pieces, and see how much time you will take to solve the created jigsaw.
Two aspects bother me about this program: it might take a while to load challenges and the fact that you need to make in-app purchases to unlock and play certain puzzles.
Still, this program might come in handy while you're on a break from your work, even without making the aforementioned in-app purchases. It offers you many hours of gameplay, has nice graphics, and provides you with a level editor.