
OpenSCAD
FreeCAD
LibreCAD
SketchUp
Autodesk AutoCAD
SolidWorks
Blender
SOLVESPACE is a parametric 3D CAD program with extrude, revolve, union and difference functions.
Solibri Model Viewer
BIM Vision
BIMSmarter IFC Viewer
Trimble Connect
Bimsync
Autodesk BIM 360
FZKViewer
Do you need to open an IFC file and modify it? usBIM.viewer+ is the only freeware certified by buildingSMART International that allows you to view, edit, convert and share BIM models in the IFC format. Basically, it is more than just a viewer!

Which is more popular?
Based on our record, SolveSpace seems to be more popular. It has been mentioned 25 times since March 2021.
Website, pricing, platforms and company facts side by side.
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usBIM.viewer+
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| Website | solvespace.com | accasoftware.com |
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What each product offers, as listed by its team.

Possible disadvantages
No features have been listed yet.
Walkthroughs and reviews on video.
Solvespace Tutorial 0: Basics and User Interface
More videos
usBIM.viewer+, the free software for viewing IFC format BIM Models
How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using SolveSpace and usBIM.viewer+. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

Love OBS and Blender. Recently started using Kdenlive and it is awesome. Big fan of OpenSCAD[1] and solvespace[2] for making functional 3D prints. I'm going to branch out a bit here and say GrapheneOS is my favorite thing going on right... - Source: Hacker News / 5 months ago
Just checked it out [1] but it appears the last version released was in 2022? Makes me wonder if it is still active. [1] https://solvespace.com/index.pl. - Source: Hacker News / 8 months ago
The comment on constraints which still blows me away is the footnote on the readme for Dune 3D: https://github.com/dune3d/dune3d Probably a bit more approachable for folks is: https://www.cadsketcher.com/ which adds the Solvespace... - Source: Hacker News / over 1 year ago
Tracking usBIM.viewer+ since Mar 2021.
When comparing SolveSpace and usBIM.viewer+, you can also consider the following products.

OpenSCAD is a software for creating solid 3D CAD objects.
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Views Solibri Model Checker and IFC models on both Windows and Mac.
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An open source 2D CAD application for Windows, Apple and Linux.
Compare LibreCAD to SolveSpace or usBIM.viewer+:

Browser-based IFC viewer and BIM compliance auditor. Validate models against buildingSMART IDS, get a scored audit report, BCF 2.1 issues, quantity take-offs and DIN 277 room schedules. Files stay on your machine, nothing is uploaded.
Compare BIMSmarter IFC Viewer to SolveSpace or usBIM.viewer+: