Most interesting in 3D Modeling

Free
LuxRender is a physically based and unbiased rendering engine.
Free
ZBrush is a digital sculpting and painting program.
Creates and edits 2D CAM technical drawings.
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

myCBR
Free

Open-source similarity-based retrieval tool and SDK for creating and testing sophisticated similarity measures.

Photo Rename With MetaData
Free

Program that renames photos with their metadata (date, time, camera brand/model).

VirtualRig™ Studio
Free

VirtualRig Studio Lite software creates realistic curved motion blur simulation.

SHAPE
Free

Program for drawing crystal faces and sections.

G4beamline
Free

Particle tracking program based on Geant4, useful for muon facilities and systems not organized as a beamline, with a cosmic-ray beam.

zPots
Free

zPots is a consumer 3D maker application for your Mac.

GaitSym
Free

GaitSym is a forward dynamic modelling program for Mac.

Podium Walker
Free

Podium Walker is a real-time animation plug-in for SketchUp.

Clean Run Course Designer 4
Free

This is an app for designing and sharing dog agility courses and exercises

Color Cube
Free

Color Cube offers easy access to millions of colors in RGB, HSV and CMY.

RootLocs
Free

RootLocs plots root locus diagrams of SISO feedback loops, including those with negative gain, time delay, and up to 20 poles/zeros.

Quartz Particle Designer
Free

Design your own particle effects like fireworks, flame, snow, etc.

MathGraph
Free

App for data analysis and graphing, tailored to scientists and engineers.

vZome
Free

The app is designed primarily to build virtual Zome models.

BlinkMSequencer
Free

BlinkM Sequencer is an open source app that allows you to program any RGB color/pattern to a BlinkM LED...

CtrlAltStudio Viewer
Free

Tool for Second Life & OpenSim virtual worlds with features like Oculus Rift...

Croptima InPlate CS6
Free

InPlate is a professional InDesign imposition plug-in.

Dehumaniser Lite
Free

Dehumaniser Lite has 35 HD monster and creature presets to choose from.

ClassicalGDL
Free

ClassicalGDL is a CAD developed for the creation of gdl texts.

HeadPaint
Free

Free webcam-based app to explore creative ways of painting with your head.