Vizard 5.1 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. This software was originally produced by WorldViz.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. Vizard lies within Photo & Graphics Tools, more precisely Viewers & Editors.
From the developer:
Vizard is a versatile virtual reality development interface. You’ll build applications that provide users with the best experiences across virtual reality immersive technologies such as displays and sensors. The supported map types are: ambient, diffuse, specular, detail, specular level, glossiness, self-illuminations, rim, rim radial, opacity, bump, reflection, reflection falloff, refraction, and displacement.
You may want to check out more software, such as Live Characters Motion Analysis or PPT MoCap, which might be related to Vizard.