Our website provides a free download of Xj3D 2.1 for Mac. The application is included in Design & Photo Tools. Our antivirus scan shows that this Mac download is clean. The actual developer of this free Mac application is Web3D Consortium.
From the developer:
Xj3D is an open source (LGPL) project of the Web3D Consortium Source Working Group focused on creating a toolkit for VRML97 and X3D content written completely in Java. It serves a dual purpose of being an experimental codebase for trying out new areas of the X3D specification and as a library that we encourage application developers to use within their own application to support X3D technology.
You may want to check out more Mac applications, such as 3D Invigorator PS, Microspot Interiors Pro or eBPMN, which might be similar to Xj3D.