Download of HD2016 6.4.5 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. HD2016 lies within System Utilities, more precisely Device Assistants. The actual developer of the free software is HUIDU technology.
HD2016 is suitable for 32-bit versions of Windows XP/7/8/10/11. The program's installer files are commonly found as HD2013.exe, HD2014.exe, HD2016.exe, HDSmart.exe or HDTuneProDriveStatus.exe etc. The most popular versions among the program users are 6.4, 6.1 and 6.0. We recommend checking the downloaded files with any free antivirus.
From the developer:
HD2016 is a program for setting-up and managing HUIDU LED display control cards. Using this application, you can precisely control the contents of each display pixel-by-pixel. Text animations can be programmed without any coding; simply drag-and-drop text-bar and customize the effect, background color, speed of animation, etc.
You may want to check out more software, such as Fake Webcam, Sansa Updater or WebCam Monitor, which might be related to HD2016.