Simurban!

Sketchfab is the first web service to publish interactive 3D content online in real-time without plugins.

3D Model Maker lets you create virtual 3D models in your computer. You can create anything your imagination can think of. (Not limited to simple cubes or blocks like some apps!) It uses meshes of polygons just like they used in Toy Story.It uses the 3DS file format which is compatible with lots of professional software like Autodesk 3D Studio, Maya, AutoCAD and Blender. This means you can create your models on the move on your tablet or PC and import them later into the 3D package of your choice.Use tools like "extrude", "subdivide", "smooth", "pull" and many more to create your 3D objects. Move the individual vertices around or move select multiple vertices with the box select tool.Paint the faces different colors. Rotate the 3D shapes at any angle or choose from a list of views. »

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 utilizing hardware-accelerated 3D graphics. Since 2001, OGRE has grown to become one of the most popular open-source graphics rendering engines, and has been used in a large number of production projects, in such diverse areas as games, simulators, educational software, interactive art, scientific visualization, and others. »

Structure Synth is a cross-platform application for generating 3D structures by specifying a design grammar. Even simple systems may generate surprising and complex structures. The design grammar approach was originally devised by Chris Coyne (for a 2D implementation see the popular Context Free Art).

Awakening is a powerful professional real-time 3D solution. With it, you can easily create eye-catching interactive 3D presentations, brief films, games...

The Grit Game Engine is an MIT-Licensed Open Source Game Engine that is highly scriptable via Lua. It supports huge open world maps and dynamically streams assets from disk. The Grit Game Engine is a community project to build a free game engine (and toolchain) for implementing open world 3D games, such as the those in the GTA series, Saints Row, Crysis, Fallout 3, Just Cause 2, Mafia 2, Burnout, etc. Anyone can use the engine as a foundation for their game, and anyone can read / modify / integrate the source code. »

DX Studio combines the latest in real time 3D graphics technology from industry and gaming with rapid application development tools in a powerful 3d engine.

Fragmentarium is an open source, cross-platform IDE for exploring pixel based graphics on the GPU.

PhotoAnim is a free Windows program to edit and animate photos.Resulting animations and videos can be published on http://3dthis.com

Unigine Engine is a proprietary cross-platform middleware, developed by Unigine Corp. It is used as either a game engine or as an engine for VR systems. The middleware is aimed to the wide market, so there are various licenses of Unigine, including special ones for independent developers.

Mycosm is a platform for creating 3D applications, designed to be used by a broad range of developers for many industries. For example, games, engineering simulation, education, visualization, decision support etc. Mycosm consists of a studio tool and freely distributable player.