K-3D

K-3D is free-as-in-freedom 3D modeling and animation software. It features a plugin-oriented procedural engine for all of its content, making K-3D a very versatile and powerful package. K-3D excels at polygonal modeling, and includes basic tools for NURBS, patches, curves and animation. K-3D allows you to create and edit documents in multiple realtime OpenGL solid, shaded, texture-mapped views. You can even model, animate, and interact with animations while they play back for maximum productivity!

3D Rendering Features are

• Powerful scene graph Procedural Modeling with complete modeling history.
• Selection: Objects, meshes, faces, edges, patched, curves, point groups, points.
• Geometry types: Polygon, NURBS, subdivision, blobby.
• 3D Primitives: Cone, circle, cushion, cylinder, disk, grid, paraboloid, polyhedron, sphere, torus.
• Boolean modeling operations (using GTS library).
• Text: FreeType2 support.
• Instantiation: Create duplicates without adding gemometry to the scene.

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Art of Illusion

Art of Illusion is a full featured 3D modelling, rendering, and animation studio. It is written entirely in Java, and can run on almost any operating system.

Art of Illusion is a free, open source 3D modelling and rendering studio. It is written entirely in Java, and should be usable on any Java Virtual Machine which is compatible with Java 5 or later.

Art of Illusion is powerful enough to be used for serious, high end animation work. Many of its capabilities rival those found in commercial programs. Some of the highlights include subdivision surface based modelling tools, skeleton based animation, and a graphical language for designing procedural textures and materials.

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Genesis3D

Genesis3D is a real-time 3D rendering environment for all of your real-time 3D needs. With a large online community, free online forums, and many links to Genesis3D developers...you will find all the support and tools that you need to begin developing world-class, real-time 3D applications today. If you are new to developing with Genesis3D, the current version of the Software Developer's Kit is 1.1. Use the tutorials found on our linked pages, and ask questions on our forum. The engine is free to download and play with. Also make sure to download GDemo1, an impressive example of Genesis3D in action. Please read our license agreement regarding the creation of your own content using the engine. If you modify the Genesis3D engine source, excerpt any portion of it, or if you use a modified version of the engine source, you must make your source code available for others to use under the same terms that we have granted you. If you do not wish to make your source code available you must obtain a separate paid license from Eclipse.

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OGRE (Object-Oriented Graphics Rendering Engine)

OGRE (Object-Oriented Graphics Rendering Engine) is a scene-oriented, flexible 3D engine written in C++ designed to make it easier and more intuitive for developers to produce applications utilising hardware-accelerated 3D graphics. The class library abstracts all the details of using the underlying system libraries like Direct3D and OpenGL and provides an interface based on world objects and other intuitive classes.

Features are

• Simple, easy to use OO interface designed to minimise the effort required to render 3D scenes, and to be independent of 3D implementation i.e. Direct3D/OpenGL.
• Extensible example framework makes getting your application running is quick and simple
• Common requirements like render state management, spatial culling, dealing with transparency are done for you automatically saving you valuable time
• Clean, uncluttered design and full documentation of all engine classes
• Proven, stable engine used in several commercial products
• Powerful material declaration language allows you to maintain material assets outside of your code
  
• Supports vertex and fragment programs (shaders), both low-level programs written in assembler, and high-level programs written in Cg, DirectX9 HLSL, or GLSL and provides automatic support for many commonly bound constant parameters like worldview matrices, light state information, object space eye position etc
• Supports the complete range of fixed function operations such as multitexture and multipass blending, texture coordinate generation and modification, independent colour and alpha operations for non-programmable hardware or for lower cost materials
• Multiple pass effects, with pass iteration if required for the closest ‘n’ lights
• Support for multiple material techniques means you can design in alternative effects for a wide range of cards and OGRE automatically uses the best one supported
• Material LOD support; your materials can reduce in cost as the objects using them get further away
• Load textures from PNG, JPEG, TGA, BMP or DDS files, including unusual formats like 1D textures, volumetric textures, cubemaps and compressed textures (DXT/S3TC)
• Textures can be provided and updated in realtime by plugins, for example a video feed
• Easy to use projective texturing support.

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Sweet Home 3D

Sweet Home 3D is a free interior design application that helps you place your furniture on a house 2D plan, with a 3D preview.

Sweet Home 3D is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

Sweet Home 3D may run on Windows, Mac OS X 10.4 to 10.6, Linux and Solaris.Depending on whether Java is installed on you system or not, you may launch Sweet Home 3D with Java Web Start or its installer.

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Celestia

Celestia is the the free space simulation software that lets you explore our universe in three dimensions. Celestia runs on Windows, Linux, and Mac OS X.

Unlike most planetarium software, Celestia doesn't confine you to the surface of the Earth. You can travel throughout the solar system, to any of over 100,000 stars, or even beyond the galaxy.

All movement in Celestia is seamless; the exponential zoom feature lets you explore space across a huge range of scales, from galaxy clusters down to spacecraft only a few meters across. A 'point-and-goto' interface makes it simple to navigate through the universe to the object you want to visit.

Celestia is expandable. Celestia comes with a large catalog of stars, galaxies, planets, moons, asteroids, comets, and spacecraft. If that's not enough, you can download dozens of easy to install add-ons with more objects.

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