ViewSonic WPD-100 1.5.6 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 free PC software was developed to work on Windows XP, Windows 7, Windows 8, Windows 10 or Windows 11 and can function on 32-bit systems. ViewSonic WPD-100 is included in System Utilities. The most popular versions among the program users are 1.5 and 1.0. The actual developer of the free software is ViewSonic. We recommend checking the downloaded files with any free antivirus.
From the developer:
With the WPD-100, you can wirelessly project from Windows® or Mac laptops, and you can use your Android™ or iOS devices to wirelessly stream content to a projector. The WPD-100 driver ensures that the projector works properly and there are no problems with the projection.
You may want to check out more software, such as ViewSonic EDID Editor, ViewSplit or Signage Manager, which might be related to ViewSonic WPD-100.