Common PCB design software providers include Altium, Cadence, Mentor, etc. Among them, Protel 99 SE, Pi'otel DXP, AltiumDesigner, etc. launched by Altium (formerly known as Protel International) are widely used in my country. Currently, Altium Designer has a new version released every year. For PCB design software, it is easier to learn the rest after learning to use one, because the functions of this type of software are very similar.
