A .NET 4.0 library (wrapper) for converting HTML to XHTML licensed under GPLv2 or above
Author: Corsis (formerly Tenka Text)
Readme: http://corsis.sourceforge.net/index.php/Html2Xhtml
Documentation: http://corsis.sourceforge.net/Html2Xhtml/dox/
html2xhtml: https://github.com/jfisteus/html2xhtml
Put html2xhtml.exe and libiconv-2.dll into your output directory, i.e. \src\Html2Xhtml-Test\bin\Debug\net6.0-windows