Share some PCB design sites which may be helpful

PCB design sites may be helpful:

EasyEDA https://easyeda.com/
Do circuit simulation, PCB design, Electronic circuit design for free. Help you complete design from schematics to the finished PCB in shortest time

Altium Designer http://www.altium.com/altium-designer/overview
Altium Designer is an electronic design automation software package for printed circuit board and embedded software design

LTspice http://www.linear.com/designtools/software/#LTspice
LTspice IV is a simulator, schematic capture and waveform viewer

OrCAD https://www.cadence.com/content/cade...ome/tools.html
OrCAD is a proprietary software tool suite used primarily for electronic design automation (EDA).

PCB123 http://www.sunstone.com/pcb-products/pcb123
PCB123 is a PCB design software that allows you to create and edit PCB designs

Circuit and PCB Wizard http://www.new-wave-concepts.com/
PCB Wizard is a powerful package for designing single-sided and double-sided printed circuit boards (PCBs).

DesignSpark PCB http://www.rs-online.com/designspark...-pcb-home-page
DesignSpark PCB is a free-of-charge schematic capture and PCB layout tool

dip Trace http://diptrace.com/
DipTrace is EDA/CAD software for creating schematic diagrams and printed circuit boards

Eagle https://cadsoft.io/
PCB design software. Get an overview of our Schematic Editor, Layout Editor and Autorouter.

ExpressPCB https://www.expresspcb.com/
PC board layout software and PCB manufacturing service

free PCB http://www.freepcb.com/
A free, open-source PCB layout editor for Windows.

Fritzing http://fritzing.org/home/
Fritzing is an open source initiative to develop amateur or hobby CAD software for the design of electronics hardware

KiCad http://kicad-pcb.org/
KiCad is also a open Source PCB Design Software