开源的pcb开发软件，相当好用，强烈推荐-pcb develop

开源的9通道遥控，gruvin9x。 原理图和PCB文档，打开用KiCAD.-Open source-channel remote, gruvin9x. Schematic and PCB documents open use KiCAD and.

Altium2kicad can help you migrate an Altium project to KiCad, it supports most features of .PcbDoc and .SchDoc, so it can convert both the PCB and schematic. It consists of a few perl scr ipts that are executed on the altium design files.