Joy of Think

Hpricot

Hpricot is a fast ruby html parser.

Sanitize

Sanitize is a ruby lib which can filter html tag based on a whitelist.

In Java World, HTML Parsers play a role that change dirty, untidy html pages in real word into a well-formatted HTML files.

Pure-Java Solution

Here is a summary page: Open Source HTML Parsers in Java

Using Firefox-DLL

Besides all these, there is a method to using firefox-dll to parse html. This method can get best result.

But this method is very hard to deploy and easy to broken.

Benchmark

Here is a benchmark result, which shows that CyberNeko is winner.

Javascript and CSS2 support

However, if you want to support javascript and css2, Cobra could be a good answer. Please check following blog Using the Lobo Cobra Toolkit to Retrieve the HTML of Rendered Pages