Fritzing differs from other tools through:
* a real-world breadboard view that is hands-on and easy to understand
* a visual component library including the Arduino, Raspberry Pi, SparkFun parts and many more
* an intuitive user interface, with seamless switching between breadboard, schematic and pcb design
The lively community on fritzing.org exchanges projects and tips, and there is also a PCB service 'Fritzing Fab' that produces user designs.