TL:DR; TIF (TIFF), PDF, EPS, AI, FAX, DCX viewer.
TIF, PDF, EPS, PS, AI, FAX, DCX viewer. Allows to view, scan, print multipage files. TIFF Viewer can remove noise, deskewing image, color adjust, add margins.
Coolutils PDF Viewer helps you to view PDF files in batches the way you like. Browse the files in seconds in a thumbnail view mode and find the one you need! You may adjust the size of the thumbnails to your taste. Coolutils PDF Viewer is freeware.
A lite and fast dwg viewer, let you browse, view, markup and print DWG, DXF, DWF files. Supports AutoCAD R2.5 thru 2008 files. For the typical use of double click and open the drawings, it is 3 to 40 times faster than most of other CAD applications.
Alteros 3D is a 3D/2D graphic file viewer with a customizable interface. Supports any 3D files (3DS, VRML, TrueSpace, LightWave and many other formats), as well as 2D graphical files (PSD, PNG, TIF, JPEG, BMP, GIF), Video, Audio files and DVD.