Most interesting in 3D Modeling

Free
LuxRender is a physically based and unbiased rendering engine.
Creates and edits 2D CAM technical drawings.
Free
ZBrush is a digital sculpting and painting program.
Free
A powerful tool designed for making 3D animations and short films.
Free
From the outset, ArchiCAD was developed specifically to address the architect

Top rated in 3D Modeling

FreeCAD
Free

FreeCAD is a general purpose Open Source 3D CAD modeler.

LuxRender
Free

LuxRender is a physically based and unbiased rendering engine.

ArchiCAD
Free

From the outset, ArchiCAD was developed specifically to address the architect

123D Make
Free

Create real objects from STL or OBJ digital files.

Kinemac
Free

A powerful tool designed for making 3D animations and short films.

DraftSight
Free

It is free 2D CAD software that lets you create, edit and view DWG files.

AutoCAD
Free

It provides robust 3D free-form design tools and powerful drafting capabilities.

DAZStudio
Free

Free 3D design and animation tool for stunning digital imagery. Create unique art effortless.

Dia
Free

Dia is a program to draw structured diagrams for Mac.

HighDesign
Free

Create and customize computer-aided design projects.

Live Interior 3D Pro Edition
Free

This program enables you to create home and office design plans.

mocha for After Effects
Free

Mocha for After Effects is designed for the After Effects community.

blender
Free

Create 2D and 3D designs and animations.

CINEMA 4D
Free

Create, animate, and render 3D models and scenes.