ActiveWorlds 3D 6.2.1735.1417 for Mac can be downloaded from our website for free. This free software for Mac OS X was originally developed by ActiveWorlds, Inc.
From the developer:
ActiveWorlds 3D is an online sandbox platform with various worlds and several objects. It loads objects (RWX format) and a "map" from a server and renders a 3D environment where oneselves can visit places or meet other people and chat with them. AW supports OpenGL, DirectX, and software rendering.
You may want to check out more software for Mac, such as Duke Nukem 3D, Strata Foto 3D SE or Strata Design 3D SE 7, which might be related to ActiveWorlds 3D.
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