Our designers and engineers prefer to exchange files for viewing in a native format, however without the software installed on your computer you will not be able to view these files.  To get around this problem, the CAD tool developers typically offer a free viewing or browsing application that allows you to view the file.  Since the programs are for viewing only, you will not be able to make changes or edits to the open files.  Download links are provided for the most common files types below.

Downloads:

Cadence’s Allegro Physical Viewer Download
Allegro Free Viewer Database viewer for Allegro PCB Editor, Allegro PCB SI, and Allegro IC package solutions. Includes property and element query, measure distance, find, reports, and more.
Mentor PCB Browser & Design Capture Download
Mentor PCB Browser PCB Browser is used for viewing PCB databases created with Mentor Boardstation and Expedition as well as search and review properties on components and nets.
Valor Universal Viewer Download
Valor Universal Viewer The Valor Universal Viewer supports interactive viewing and navigation of ODB++ and ODB++(X) formats of the PCB data model.
eDrawings Free Viewer Download
Solidworks eDrawings Free Viewer eDrawings Free Viewer lets you view, print, and review all types of native SolidWorks® parts, assemblies, and drawings as well as DWG & DXF files.
Adobe Acrobat Reader Download
Adobe Acrobat Reader Adobe Reader software is the global standard for electronic document sharing. It is the only PDF file viewer that can open and interact with all PDF documents.