CAD Programs/Software to realize Printed Circuit Boards (Schematic + PCB)

PB Free and ROHS compliant PCBs
Single or double sided
With or without Solder Mask and Silkscreen

RimuPCB

- Easy to use and cost effective.
-Generates industry standard Gerber, Excellon and Pick and Place files for manufacture.
- Can import a netlist from your schematic. Seven different formats supported.

PCB Artist
There are several things I like better about your software than the other guys free version...PCB Artist is so intuitive that a tutorial is not needed" P.W., Wade Technical.

PCB

PCB is an interactive printed circuit board editor for the X11 window system. PCB includes a rats nest feature, design rule checking, and can provide industry standard RS-274-X (Gerber), NC drill, and centroid data (X-Y data) output for use in the board fabrication and assembly process. PCB offers high end features such as an autorouter and trace optimizer which can tremendously reduce layout time.

PCB 3.0
PCB 3.0 is a branch of the source code modified to operate under the Tcl/Tk interpreter. Most of the coding for PCB 3.0 was done at MultiGiG, Inc., Scotts Valley, California, by Tim Edwards, Paramesh Santanam, and (working from India, courtesy of SynApps, Inc.), Nishit Patel. The code base is a departure from the original PCB in that a complete Tcl command-line API was concocted for PCB, and the GUI re-written as a Tk script. For the first cut (version 3.0), a fair bit of effort went to ensuring that the GUI looks and acts as much like the original Xlib-based version.

Cadstar
In response to customer demands the primary focus for version 9.0 has been to make CADSTAR even easier to use, with graphical representations of every function assignment, making the tool both easier to work with while allowing the user to develop their design skills – in turn increasing their design efficiency.