This critique covers most of the facets of the P3P platform, examining both the assumptions and implementation. Areas targeted for critical need are: "more specificity in declaring the purpose behind taking information, a means to establish a negotiated contract that goes beyond W3's APPEL (A P3P Preference Exchange Language), a means in the law for policing the contracts obtained, a means for transitivity and universality of the protection on information, and an IETF (Internet Engineering Task Force) definition that doesn't require the web (specifically, the HTTP protocol)."

APPEL: A P3P Preference Exchange Language 1.0(APPEL1.0). A language for describing collections of preferences regarding P3P policies between P3P agents

EZP3P is a P3P XML utility that within a few minutes can apply a basic P3P policy to your web site. EZP3P can be used online or offline. This is a pay service.

Offer P3P Policy Editor, a tool for creating and updating web site privacy policies using the P3P language. [Java, Windows]

Description of a privacy policy implementation using the P3P standard.

The Joint Research Centre P3P Proxy Version 2.0 is a P3P user agent, which acts as an intermediary agent (the middleman) that controls access to remote web servers dependent upon the privacy preferences you have specified.

W3C P3P Specification Working Group Chair, Lorrie Cranor's home page has P3P news, links, and articles.

Instructions for building Mozilla with P3P enabled.

Answers to frequently asked questions about data privacy and P3P; from Computer Professionals for Social Responsibility.

Collection of demo tools, papers and talks, media coverage, and other links regarding P3P and Internet Privacy.

An independent resource for assistance in P3P Implementation for Web sites. Includes tools, implementation guides, links, and FAQs. Created and maintained by the Internet Education Foundation.

Subscription service online P3P generation tool. Produces compact headers, human-readable privacy statement, P3P reference file, and code snippets for implementation in popular languages.

P3P Editor: A P3P generator that utilizes an easy wizard interface to create a P3P privacy policy your web site - allowing cookies to function in IE6. This is a paid service costing $70.00 USD.

Web based utility for creating and updating Web site P3P privacy policies, P3P Policy Reference Files and P3P Compact Policies using the P3P language. This is a PAY service, prices range from 29.95 to 400.00 USD

IBM P3P protocol parser and constructor written in Java. Contains classes and methods for parsing, generating, manipulating and evaluating P3P proposals and responses. It also contains a parser and evaluator for "A P3P Preference Exchange Language" (APPEL).

Providing an online tool for site operators to implement a policy that will be compliant with P3P 1.0 Candidate Recommendation (December 2000). Also provides Japanese language translation of P3P documents and specifications from the W3C.

The AT&T Privacy Bird is a free browser plug-in that reads privacy policies written in the standard P3P format, specified by the W3C, and displays them in an easy to understand language. Works with Microsoft Internet Explorer 5.01, 5.5, or 6.0.

This O'Reilly Network article has two parts: the first is an overview of P3P, written by Simson Garfinkle; the second section, written by Lorrie Cranor, offers a more in depth look and examples.

Carnegie Mellon University project provides research into large-scale distributed and automated negotiations for privacy and the complementary negotiations for digital rights management. Articles, slide presentations, experimental tools.

From AT&T, this tool has been designed primarily to translate existing privacy policies into P3P syntax. AT&T states that it is for demonstration purposes and to gain experience with P3P implementations.

A list of sites compliant with the P3P specifications. Compiled by the W3C and a useful reference for learning by example.

Two free P3P Policy viewing tools. P3Pexplorer: Find and view policy file from a web site. Compact policy viewer: View the compact policy header of a web server.

This is the specification, W3C recommendation date: 16-05-2002, of the Platform for Privacy Preferences (P3P). This document, along with its normative references, includes all the specification necessary for the implementation of interoperable P3P applications.

This is a guide for site operators deploying the Platform for Privacy Preferences (P3P). It provides information on the tasks required, and gives guidance on how to best complete them.

Platform for Privacy Preferences Project, P3P is a protocol for privacy protection on the Web. The W3C is the governing body issuing the standard.

Web Privacy with P3P includes many examples of P3P policies and policy reference files. The longer examples can be downloaded from this web site. The book also includes references to a variety of online resources. The URLs for these resources are also available at this site.

This P3P Validator is compatible with P3P spec from Sep 15, 2000 to Sep 28, 2001. Test you implementation's compliancy and be alerted to errors.