Novarm DipTrace

DipTrace is proprietary EDA (electronic design automation) software for editing circuit schematics, PCB layouts, component libraries and 3D viewing. First released in 2004, it is available for Windows and via Wine for Linux and OS X.

Vesrsions
There is no board size limit with DipTrace. The Freeware edition has all features and libraries of the full package, except with a limitation of 300 pins, 2 signal layers and is for non-profit use only. DipTrace Lite, the academic version is limited to 500 pins, 2 signal layers and for profit use is allowed. The full unlmited version costs less than the Professional version of CadSoft EAGLE.

Support
DipTrace support is easily obtained from the developers. While it's usage is more intuitive than EAGLE, DesignSpark PCB and other EDA packages, it is not as widely used and supported by the community.

Compatibility
DipTrace can import EAGLE files and CAD DXF files and some other formats. It exports Gerber and N/C Drill files.