Apowersoft CAD Viewer
An easy-to-use, yet full-featured CAD software that can view, annotate, measure, edit and convert your drawings quickly. Anyone can open and view all versions of AutoCAD drawings completely and accurately, and even edit and model their designs quickly and easily due to its exclusive analytical technique. No matter if it's a higher or lower DWG file, this CAD software allows you to open it without such problems as unclear fonts, wrong mild steel types, inexplicable Latin character garbled, etc. It also has a useful toolkit to modify and re-model the designs.You can annotate your drawings with text, linear, ellipse, rectangle, etc. In addition, add annotative dimensions to the objects in your draft without damaging the quality including linear, radial, angular, ordinate, arc length, etc. Measure the distance, angle, radius, area, volume, arc length, coordinate, and even edit the drawings as you go.
Learn more
DWGSee Viewer & Editor
DWGSee Viewer & Editor is a lightweight and high-performance CAD application designed for viewing, editing, and printing DWG, DXF, and DWF files. It allows users to browse drawings quickly and make precise modifications without the complexity of full CAD software. DWGSee Viewer & Editor supports AutoCAD file versions from R14 through the latest 2026 releases. The platform includes tools for drawing, modifying objects, adding annotations, and marking up designs. Smart measuring features enable accurate calculation of lengths, angles, areas, and radii using snap points. DWGSee Viewer & Editor also supports batch printing, drawing comparison, and file export for efficient collaboration. With its fast performance and simple interface, DWGSee Viewer & Editor helps users work with CAD drawings more efficiently.
Learn more
PloComp
PloComp displays HPGL/Vector/Image. It can display maximum of 20 file in piles or in arranges.
Display mode is overwrite, merge, undisplay, mirror at a file. This is useful for checking the product drawings by overlapping multiple drawings, such as printed wiring boards, or for comparing old and new drawings by recognizing changed areas using different colors or cloud marks.
Supports many file formats:
Input:
HP-GL, HP-GL/2, HP RTL, PDF, DXF, DWG, GERBER, NC-Drill, IGES, SXF, EMF, TIFF, JPEG, Bitmap, PCX, FPX, GIF, PNG
Output:
HP-GL, HP-GL/2, HP RTL, PDF, DXF, DWG, IGES, SXF, EMF, TIFF, JPEG, Bitmap, PCX, FPX, GIF, PNG, Printer, Plotter, WMF, PS, EPS, SVG, XPS, PCL, Copy to Clipboard (black and white, color)
It has same powerful input and edit function as 2D-CAD, it can read view file and edit.
All the function usage can be carried out free for 30 days from installation for trial.
Learn more
ViewCompanion
ViewCompanion Standard is an application for viewing, printing and converting plotter files generated by your CAD program or plotter driver. ViewCompanion can open PLT plotter files using HPGL, HP-GL/2, KIPGL, HP-RTL and Calcomp formats. In addition to plotter files it can view, print and convert Adobe PDF, CGM, Autodesk DWF and Gerber files. One of the most important features is the ability to convert the viewed file into other formats. ViewCompanion can convert your files into several different formats. You may measure distances and areas using ViewCompanion's precise measurement tools with snap to drawing geometry. If your drawings are not in original scale (1:1) you may calibrate the measurement tools to provide correct results. Use ViewCompanion to annotate your files with markup elements like stamps, revision clouds, text notes, dimension lines, area measurements, barcodes, symbols, images and more.
Learn more