A ViewCompanion family comparison chart can be found here.

ViewCompanion Standard
	View, print and convert all your HPGL, HPGL/2 and HP-RTL files. ViewCompanion can convert to standard formats like Adobe PDF, AutoDesk DWF, AutoCAD DXF, Postscript, JPEG, TIFF and others. Batch printing and conversion is included.	Product Description Download Purchase Prices

ViewCompanion Pro
	View, markup, print and convert HPGL, HPGL/2, HP-RTL, TIFF, CALS, JPEG and BMP files. ViewCompanion can convert to standard formats like Adobe PDF, AutoDesk DWF, AutoCAD DXF, Postscript, JPEG, TIFF and others. Batch printing and conversion is included.	Product Description Download Purchase Prices

ViewCompanion Premium
	View, markup, print and convert HPGL, HPGL/2, HP-RTL, PDF, PS, TIFF, CALS, JPEG and BMP files. ViewCompanion can convert to standard formats like Adobe PDF, AutoDesk DWF, AutoCAD DXF, Postscript, JPEG, TIFF and others. Batch printing and conversion is included.	Product Description Download Purchase Prices

GerbView
	View, markup and print your Gerber, HPGL/2 and Excellon files. Check your files before you send them to the PCB manufacturer, and eliminate costly errors. Supports both standard and extended Gerber. GerbView can convert to Autodesk DXF, Adobe PDF, DWF, JPEG, SVG, TIF, CALS and other formats.	Product Description Download Purchase Prices

scViewerX ActiveX Control
	Powerful HPGL/HPGL-2 ActiveX viewer Control.	Product Description Download Online Demo

WinTasks 5 Pro by Uniblue Systems Ltd
	WinTasks 5 Pro is the ultimate power utility software that arms you with complete information and an arsenal of heavy duty tools putting you in full control of your computer.	Product Description Special Offer