Autodesk DWG TrueView - Get a free DWG viewer to view, open, edit, and convert .dwg files, the native file format for AutoCAD files. DWG Trueview includes DWG TrueConvert.
Img.vision - Image hosting & video hosting for eCommerce sellers
Autodesk Design Review - Design Review lets you view, mark up, print, and track changes to 2D and 3D files.
UploadHouse - Thumbnail and resize your photos and images
ZWCAD Viewer - Cross-Platform .DWG | .DXF | .DWT R12-2013 Viewer
ImageVenue - ImageVenue is a great online hosting service that allows uploading pictures for showing creative works with a simple-to-use technique.