XmHTML is a Motif widget capable of displaying HTML 3.2 documents.
Features include a very good HTML parser (which is as also available
as a Widget) with excellent document verification and repair
capabilities.
Features built in support for X11 bitmaps, pixmaps, GIF87a & GIF89a
(using a patent free LZW decoding method), animated gifs, JPEG
(baseline and progressive) and PNG (all features supported), anchor
highlighting, text justification, full HTML support, HTML
frames and many more. It also comes with four examples demonstrating
possible use of the XmHTML widget.
WWW: http://sourceforge.net/projects/xmhtml/