Open source EDA / electronics CAD software. Use schematic capture, create PCB designs and view them in 3D, all forever free.
identifier "org.kicad.kicad" and anchor apple generic and certificate 1[field.1.2.840.113635.100.6.2.6] /* exists */ and certificate leaf[field.1.2.840.113635.100.6.1.13] /* exists */ and certificate leaf[subject.OU] = "9FQDHNY6U2"