WINPLOT
Winplot is a general-purpose plotting utility for Microsoft Windows that can draw (and animate) curves and surfaces presented in a variety of formats.
The final 2012 release of Winplot can run on Windows 95, 98, Me, 2000, XP, Vista, 7. It may also run on Windows 8, 10, and 11. It is a 32-bit application. It is released as freeware, with no source code available, as its author, Rick Parris, did not want to relinquish control of development, and felt his code was lengthy and badly documented.
Rick Parris died on October 23, 2012. He was 67. Some time after his death, Phillips Exeter Academy stopped hosting his official Winplot website, so an alternative link is provided.
-Wikipedia