1)   2D/3D CAD Viewer: DXF DWG HPGL TIFF SVG 6.3
Supports: DWG, DXF, HPGL, TIFF, SVG, CGM, EMF/WMF, JPG, JPEG, GIF, PCX, BMP, etc. Print System allows you to print large drawings on multiple sheets. Clip Rectangle copies to clipboard as BMP and EMF. Export to TIFF, BMP, WMF, GIF, JPEG
DWG, DXF, .DWG, .DXF, CGM, SVG, HGL, PLT, SPL, HGL,

 2)   UniView 1.65
UniView is a powerful image viewer, converter and manipulation tool. It support 50+ most popular image formats. It also intergates many functions, including encrypt images,batch convert and rename image files, animation controls and html album maker.
image, view, convert, encrypt, rename, animate, html, album, BMP, TGA,

 3)   Total CAD Converter 1.01
CAD Converter will help you to convert CAD files to tiff, PDF, jpeg, png, wmf, dxf. Source formats are dwg, dxf, plt, hgl, hg, hpg, plo, hp, hp1, hp2, hpgl, hpgl2, gl2, prn, spl, cgm, svg. CAD Converter also resizes files. All can be done in batch!
converter, dwg, PDF, dxf, plt, hgl, hg, hpg, plo, hp,