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HTML Purifier is a standards-compliant HTML filter library written in PHP. HTML Purifier will not only remove all malicious code (better known as XSS) with a secure yet permissive whitelist, it will also make sure your documents are standards compliant, something only acheivable with a comprehensive knowledge of W3C's specifications.
htmLawed is a highly customizable single-file PHP script to make text secure, and standard- and admin policy-compliant for use in the body of HTML 4, XHTML 1 or 1.1, or generic XML documents. It is thus a configurable input (X)HTML filter, processor, purifier, sanitizer, beautifier, etc., and an ... [More]
This rails plugin modifies ActionMailer::Base so that an email is sent only to those addresses which you specify ahead of time. This plugin is still 'alpha', and I will post a better description of how to use it after I work more of the kinks out.
A service that parses arbitrary HTML and returns a whitelisted subset of the elements and attributes based on the html5lib sanitizing rules. See it running at http://html-whitelist.appspot.com/.
A script that creates Apache configuration files that explit allow downloading of certain file types based on the file extentions while denying all others. Pratical to protect directories that is publicly "writeable" by users to prevent uploading of evil script etc.
NeatHtml™ is a highly-portable open source website component that displays untrusted content securely, efficiently, and accessibly. Untrusted content is any content that is not trusted by the website owner. Typical examples include blog comments, forum posts, or user pages on social networking ... [More]
Safari Cookies is the only cookie manager built for Mac OS X 10.5+ to integrate directly into Safari, for minimum disruption to your browsing experience Main FeaturesSave favorite cookies to a whitelist Search cookies Automatically remove non-favorite cookies/Flash cookies/Google Analytic cookies ... [More]
HtmlDistillerA light-weight markup parser which allows filtering and munging of HTML. Does not require the source to be XHTML-compliant. Features pluggable sets of custom HTML filters. Can filter to any arbitrary set of tag / attribute / style. Easy to implement white-lists or black-lists. ... [More]
oframebust.com Frame busting works, but it is all or nothing. Sometimes you do want to let another site frame you, but traditionally there is no way to be selective about it. oFrameBust is a protocol and an implementation that allows for white listed frame busting -meaning that you will frame ... [More]