Modelling in 3D has never been simpler thanks to K-3D. This amazing software is a free program that'll help you render and create 3D masterpieces. The program incorporates various helpful plugins as well as "visualization pipeline architecture" to help users create stunning 3D images. It was developed by Timothy Shead and released just last April 2010. So far, it's been winning a lot of critics thanks to its useful interface and easy to use tools. It's designed for use by professional artists but even those that are still getting a feel for 3D rendering can easily use it. K-3D is available as available for free download and licensed under a GNU General Public License.