Are there any robust and mature HTML parsers available for PHP? A quick skimming of PEAR didn't turn anything up (lots of classes for generating HTML, not so much for consuming), and Google taught me a lot of people have started and then abandoned a variety of parser projects.
Not interested in XML parsers (unless then can consume non-well formed HTML) or hacking it on my own with regular expressions.
Clarification of Intent: I'm not interested in filtering of HTML content, I'm interesting in extracting information from HTML documents.