3D Modeling: Create realistic 3D models from scratch or using existing templates.You're also able to save your finished projects and images to your own hard drive and if you so desire, use your printer to create hard copies of your 3D modelling projects. The software, in the end, allows you to export your finished products to Google's own 3D warehouse and allows you to place your creations on Google Earth maps which are accessible by people from around the world. For personal use, this tool is completely free. It is basically a freeware version of programs like CAD software, but offers much less in terms of functionality and professional tools. Usually commercial software or games are produced for sale or to serve a commercial purpose.Google SketchUp is a freeware and extremely easy-to-use 3D image design and 3D modelling software suite. Even though, most trial software products are only time-limited some also have feature limitations. After that trial period (usually 15 to 90 days) the user can decide whether to buy the software or not. Trial software allows the user to evaluate the software for a limited amount of time.

Demos are usually not time-limited (like Trial software) but the functionality is limited. In some cases, all the functionality is disabled until the license is purchased. Demoĭemo programs have a limited functionality for free, but charge for an advanced set of features or for the removal of advertisements from the program's interfaces. In some cases, ads may be show to the users. Basically, a product is offered Free to Play (Freemium) and the user can decide if he wants to pay the money (Premium) for additional features, services, virtual or physical goods that expand the functionality of the game. This license is commonly used for video games and it allows users to download and play the game for free.

There are many different open source licenses but they all must comply with the Open Source Definition - in brief: the software can be freely used, modified and shared. Programs released under this license can be used at no cost for both personal and commercial purposes. Open Source software is software with source code that anyone can inspect, modify or enhance. Freeware products can be used free of charge for both personal and professional (commercial use). Freeware programs can be downloaded used free of charge and without any time limitations.

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