Fritzing has a simple and realistic interface that makes designing circuits intuitive. You have to design a schematic, test it on a breadboard, design the board layout, and then after all of that, you still have to print and etch a board! Luckily, we have Fritzing.įritzing is a free open-source PCB design suite that works on Windows, Mac, and Linux. Making your own circuit boards can be a daunting challenge.