Most interesting in 3D Modeling

Free
Review 2D and 3D designs without using the application they were created in
Create a floor plan for your home and start adding walls and textures
Free
Design the lighting of various areas
It is a program that allows you to explore and visualize 3D concepts
Free
Creates complex 3D models

Top rated in 3D Modeling

Wolfram SystemModeler
Free

An easy-to-use modeling and simulation environment for cyber-physical systems

RefUcsSpy
Free

It is an AutoCAD plugin that detects when reference files are being attached

StrucCope
Free

Automatically copes a selected beam/column with any number of intersecting beams

SHOTPlus
Free

It enables advanced design, analysis and optimization of blast plans

Raylectron
Free

Raylectron is a simple, yet powerful 3D rendering plugin for SketchUp

Panel Builder 600
Free

Create and customize various HMI projects

Visual PROMETHEE
Free

It is one of the first really interactive software based on outranking methods

Virtual Property Architect
Free

Create architectural designs for home environments

WeaverBird
Free

Weaverbird is a topological modeler that contains many operators

Mastercam x6
Free

Mastercam is the most widely supported PC-based CAD/CAM software

Plex.Earth Tools for AutoCAD
Free

Inserts aerial imagery into CAD projects

Autodesk Simulation CFD Viewer
Free

Autodesk Simulation CFD software provides comprehensive fluid flow simulation

FluidImporter for SketchUp
Free

This application is a fast importer plugin for SketchUp

GeoRefImg
Free

Automatically re-position raster images inside AutoCAD as per World files

PEVSoft AttachmentMaker
Free

AttachmentMaker quickly adds attachment points to existing assets by creating an invisible mesh

GoZ for DAZ Studio
Free

Transfer data between ZBrushTM and DAZ Studio

ArchiCAD Connection for Revit
Free

The Graphisoft ArchiCAD Connection is a an add-in for Autodesk Revit programs

SmartCarve
Free

Controls and manages laser quipment operations

AutoGrid
Free

Create and customize grids for rotating machinery

Aspire for Alphacam
Free

Creates and modifies designs for cutting parts on a CNC Router