DipTrace 

DipTrace is an advanced PCB design software application that comes with PCB Layout module, powerful auto-router, Schematic Capture and Component/Pattern editors to design your own component libraries.
pcb ecad pcb layout electronics schematic capture pcb software pcb design software

DipTrace Free 

DipTrace is an advanced PCB design software application that comes with PCB Layout module, powerful auto-router, Schematic Capture and Component/Pattern editors to design your own component libraries.
pcb ecad pcb layout electronics schematic capture pcb software pcb design software

ELECTRA 

The ELECTRA autorouter provides a SPECCTRA compatible autorouting solution at a lower cost of ownership.
electra konekt autorouter routing shape-based specctra router high-speed dsn routability rules-driven adaptive printed circuit