Tkhtml is an open-source layout engine written in C using the Tk widget toolkit. It is used primarily by the Html Viewer 3 (hv3) minimalist web browser.
TkHTML version 1 was written using the XF application builder, but because of functionality reasons this part was rewritten.
On 7 September 2006, it was announced that a public build of Tkhtml Alpha 10 had passed the Acid2 test.
To run Tkhtml tcl/tk needs to be installed. The standard wish interpreter needs to be replaced by the wwwish tk interpreter to uses the WYSIWYG previewing function.