KiCad - A Cross Platform and Open Source Electronics Design Automation Suite
DWGFREE - DWGFREE is an online platform that comes with a comprehensive collection of CAD blocks that can be downloaded without the need for registration.
Proteus PCB design - Proteus PCB design combines the schematic capture and ARES PCB layout programs to provide a...
CADMAPPER - Instant CAD files for any location on earth
LibrePCB - LibrePCB is a free EDA software to develop printed circuit boards.
MAPACAD - MAPACAD is an online website that is providing leverage to designers and architectures to have the ability to download CAD map cities that can be directly used in their projects.