I've always wanted some sort of slick web-based wysiwyg-ish graphviz editor. My first step toward that is to convert a graphviz specification file (.dot file) into HTML and javascript. The javascript is mostly for drawing lines.
darcs get http://thelackthereof.org/projects/perl/dot2html
http://thelackthereof.org/darcs-rss/feed/perl-dot2html.rss returned no data, or LWP::UserAgent is not available.