EAGLE Layout Editor

EAGLE Layout Editor
is an easy to use and yet powerful tool for designing printed
circuit boards (PCBs). It can create CAM files for EXCELLON &
GERBER. EAGLE is available for Linux, Windows and Mac Operating
Systems.
Following are the
limitations of freeware version: -
-
Useable board
area is limited to 100 x 80 mm (4 x 3.2 inches).
-
Only two signal
layers can be used (Top and Bottom).
-
The schematic
editor can only create one sheet.
PCB123

screenshot for PCB123 system
PCB123 is a free
schematic and layout software. It imports Net list's from multiple
CAD vendors, 145,000+ parts library, 2, 4, and 6 layer support,
design rule check/design for manufacturing, copper pour with
net connectivity.
PCB123 system requirements: -
- Windows 2000, 2003, XP
- 64 MB System RAM
- 16 MB Video RAM
- 200 MB Hard Disk