Freeware Programs: Novarm, Ltd.

DipTrace Free 2.1 DipTrace is an advanced PCB design software application that consists of 4 modules: PCB Layout with high-class shape-based auto-router, Schematic Capture, Component and Pattern Editors that allow you to design your own component libraries.

TopoR 4.3 Extremely Fast and Comprehensive Topological PCB Auto router. It routes PCBs with free-angle technology and make arc-like traces. The result is far superior to any shape-based auto-router or even time-consuming manual routing.