3D-Tool for Windows

Name: 3D-Tool
Rating: 4.2 (5 reviews)
Author: 3D Tool USA

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Editors’ Review

Download.com staffFebruary 26, 2026

3D-Tool Free Viewer lets you visualize, measure, and annotate 3D CAD and 2D drawings. Share projects easily with self-viewing executables.

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Free

3.7

Pros
- Visualize 3D and 2D CAD files
- Dynamic cross-section viewing
- Measure and markup capabilities
- Generate self-viewing executables for sharing
- Print or save views as pictures
Cons
- Cannot save modifications or markup files
- Limited file format support in free version
- Requires upgrade for more file types
- Upgrade needed for assembly restructuring and animations

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Full Specifications

GENERAL

Release: June 6, 2023

Latest update: February 26, 2026

Version: 16.00

OPERATING SYSTEMS

Platform: Windows

Operating System

Windows 11
Windows 8
Windows 7
Windows 10

Additional Requirements: None

POPULARITY

Total Downloads: 12,715

Downloads Last Week: 10

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User Reviews

4.2/5

5 User Votes

Free version doesn't support iges & some other formats
zahuleoJanuary 1, 2014
Pros
Seems pretty good.
Cons
Wanted to quickly view IGES files, which are not supported.
Summary
Just want people to know that the free version does not support iges and several other formats.
good
richardhenry7November 26, 2007
Pros
good
Cons
Summary
Very strong 3D capabilities - a bit weak in 2D
hensleyOctober 12, 2005
Pros
Superimposing multiple models for comparing, or merging mulitple imports into one export file. Transparency and dynamic sectioning works great.
Cons
Some versions of DXF have arrow head or line font issues.
Summary
Great for Large Assemblies
January 17, 2005
Pros
Cons
Summary
I've got to have Opengl hardware acceleration for my large assemblies, and 3D-Tool uses it well. I tried a couple other viewers in preparing for a design review, the eye candy effects were nice, but they were snail slow.
Love the 3D Notes function
January 17, 2005
Pros
Cons
Summary
I love the 3D-Notes that you can attach to any part of the assembly geometry. When 'marking up' a 3D model as feedback to a vendor, they make it very clear what your comments relate too. Can't do that with eDrawings, which costs to 5 times more.

Developer’s Description

By 3D Tool USA

View, mark up, share, measure, and annotate 3D CAD files and 2D drawings.

The 3D-Tool Free Viewer is a dynamic viewer for 3D and 2D CAD files. This gives you the ability to Visualize, Cross Section, Measure/Markup and Explode Assemblies in 3D. It can read STL, 3MF files, and native 3D-Tool files (EXE/DDD), but does not provide the ability to save your modifications or markup files; for that you would need one of the low cost paid versions: Basic, Advanced, or Premium. The upgrade versions allow you to restructure assemblies, create exploded views, and animations using a very simple interface. Collaboration is easy, 3D-Tool produces zipped self-viewing executable files of your CAD projects, which can be e-mailed and displayed on any PC without pre-installation or licensing. The user interface allows anybody to view your models, zoom in on details, or simply look inside your models using dynamic cross sections. Views from any angle can be printed or saved as pictures.Need to open more types of 3D model files, like OBJ, ASC, 3DS, even 2D DWG? Simply upgrade to a Basic license. Or, add Neutral file reading with the Advanced version (Step, Iges, Sat, Parasolid). The Premium upgrade will open up the ability to directly read most all major CAD system files; Solidworks, Creo, CATIA, NX, Inventor, Rhino. It comes with a Converter to convert those files to STEP or other Neutral file types.

3D-Tool for Windows

Editors’ Review

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Pros

Cons