The major website Puzzles.com links to one of my favorite puzzle which is available at Passion For Puzzles to play online Pannerotto. It’s mentioned under “special features”, but you can also click on the Online Puzzle item in the menu to visit play online pannerotto.
The objective of Pannerotto is easy: Get all the colored squares moved into the boxes of the respective colors. A yellow target is used to move the outer cells around. Keep moving them strategically so that all of the same colored squares and boxes are matched up in the same cells. Happy Puzzling!