IDA-STEP Viewer - Component of IDA-STEP providing core viewing functionality for all kinds of STEP files (*.stp).
STP Viewer - Free STP Viewer - free software that lets you view 3D STEP files (.stp, .step file format).
A360 VIEWER - Free online CAD Viewer
ODA Viewer - ODA Viewer is a web-based software solution that allows you to view the files based on ODA format and you can easily zoom the file for detail visualization.
3D Viewer Online - 3D Viewer Online is a web service and works on computers, tablets and smartphones.
DXF View - A lightning-fast drawing viewer enables you to view DXF and DWG™ files on Mac