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Microformats Implementations and Implementers

This page lists the applications, plugins, sample code, services, tools that produce or consume microformats as well as companies, developers, and organizations who implement the aforementioned. This is only a partial list. If you know other companies implementing tools for microformats, please add them and list their services/tools and what specific microformats they support.

Implementations vs. Examples in the Wild

This page is only for implementations of tools that publish or consume microformats. Companies simply using microformats on their pages/sites belong in the "Examples in the wild" sections of those respective microformats, e.g.:

Editing This Page

This page is primarily composed of two big lists:

When you find an implementation, first make sure that it is actually an implementation as opposed to just an example in the wild of publishing microformats (see above).

Second, note the name of the tool or service separately from the name of the developer(s) who wrote the tool/service.

Add a third level heading with the name of the tool/service ( === Name of Tool === ) to the Applications / Plugins / Services / Tools section, sorted alphabetically by name of tool/service. Add a top level list item (*) just below the heading with an external link to the tool/service, along with a link to evidence of their support for microformats, and mention (and locally link) each microformat that is supported.

Add a nested list item * by Name of Developer and local hyperlink the Name of Developer to a fragment identifier in this page, e.g. Apple Computer would be linked like this: [[implementations#Apple_Computer|Apple Computer]]

Check to see if there is an entry for the developer in the list of Companies / Developers / Organizations, if not add a third level heading with the name of the developer ( === Name of Developer === ), alphabetically sorted by name of developer. Add a link to the developer's home page followed by "has implemented microformats in:".

In the entry for the developer, add a list item * Name of Tool and local hyperlink the Name of Tool to a fragment identifier in this page, e.g. X2V would be linked like this: [[implementations#X2V|X2V]]

Save the page and make sure that each fragment ID local hyperlink when clicked scrolls you to the right spot (for the developer, and for the tool). Make any fix-up edits as necessary. That's it!

Reporting Bugs

In short, Put it on the wiki. In particular, add bug reports, with URL(s) to a valid demonstrative test case(s) of course, to the listing of an implementation on this page, OR on the specific implementations wiki page (e.g. hCard Implementations). Please describe why you think it is a bug (user interface, cosmetic, violates a spec page, e.g. for problems parsing hCards, reference which part of hCard parsing the implementation appears to not be following).

If you have a sense of urgency for getting that particular bug fixed in that implementation, you may email microformats-dev with the URL of that implementation on the wiki page, and *summarize* the bug (the full description being on the wiki page instead).


Most microformat specifications have an "implementations" section, e.g.:

In addition, some microformat specifications have separate implementation pages:

Applications / Plugins / Services / Tools

This is an alphabetical listing of all applications, plugins (grouped with their app/tool), services and tools that implement microformats, along with the list of microformats that are supported, and the company and/or developers responsible for it.

As a user, the implementations listed below will automatically help you use microformats and help your data portability and interoperability with other apps and services.

Please help complete this list! If you know of additional apps/plugins/services/tools that support microformats, please add them!

Note: this section is only for listing specific implementations. The list of implementors is in the section below.

.Mac Webmail



Community Server


  • Built for SXSW 2007, Conferenceer supports hcalendar and hcard.



Delicious Generation


Microformats Extensions


Upcoming module for Drupal







  • FunAdvice supports using the rel-nofollow tag to prevent users posting content simply for the search engine benefit, to improve teh quality of the advice giving community.

Gravatar Commenters as hCards

  • Andy Hume added code to his blogging software to automatically mark-up the names and URLs of commenters on his blog with hCard.
    • by
    • Andy - any chance of open sourcing your code to turn Gravatars into hCards?

Flickr People

Flickr Photos

Flock Web Browser

Google Search

Google Creative Commons Search


  • Google hCalendar - Adds hCalendar data to Google Calendar.
  • Social xFolk - Adds xFolk links to social bookmarking sites and ma.gnolia.

hCalendar creator

hCard creator

  • The open source hCard creator (originally published by Tantek) is a very simple, yet illustrative, open source user interface / form / script which creates an hCard in real-time as you type in a set of contact information.
    • by

hKit Microformats Toolkit for PHP5

hReview creator

Ice Rocket

iChat buddy list to hCards

  • iChat buddy list to hCards - open source AppleScript to automatically convert one's buddy list in the MacOSX iChat AIM client into a valid XHTML 1.0 Strict list of hCards.
    • by

Internet Explorer




  • Publishes and aggregates hreview content - The LouderVoice site provides a variety of tools to publish hreview to blogs and it also aggregates hreview content from any registered RSS Feed so that users can search/rate/collect distributed reviews.

Laughing Squid Calendar


Live Clipboard





Maxthon is a browser for Microsoft Windows that uses the Trident rendering engine and provides additional user interface. Maxthon has built and published a plugin for their browser that recognizes microformats in web pages and allows users to take action with them, similar to Operator for Firefox Extensions.

Microformat Base

Microformat Bookmarklet Overlay

Microformat Parser for Ruby

National eXtension Initiative

Nature Network Boston

Nature Protocols




  • Optimus. Output formats: XML, JSON, JSON-P.



PostNuke is an Application Framework/Content Management Systeme


  • Profiler works as a proxy service adding microformat profiles to documents that appear to contain microformats.



Spanning Salesforce


Sivitols is a Java library for microformats. Currently only the xFolk RC1 standard is implemented, but additional microformat support is planned. This library is being written and maintained for a tag sharing project undertaken by Video Vertigo.

Annoucement, Docs


  • SPRACI - nightlife/events - hCalendar published in events listings, aggregator can read hCalendar


Sunnyvale House Concerts

Technorati Contacts Feed Service

Technorati Events Feed Service

Technorati Microformats Search

Technorati Search

Technorati Tags

  • Technorati Tags pages aggregate blog posts tagged with the rel="tag" open tagging standard, in addition to recent tagged photos and links.


Microformats Plugin


tt_address extension

  • tt_address - hCard support with the tt_address extension version 2.0.0
    • by

TIMTAB extension

  • TIMTAB - XFN support for blogrolls with the TIMTAB weblog extension for TYPO3
    • by


  • - hCalendar support in events listings and individual events.
    • by , ,




WP Microformatted Blogroll

VoteBack Plugin

Save Microformats Plugin

WP Themes

  • Sandbox is a theme for Wordpress that uses hAtom.
    • The theme is also available to accounts on the <username> hosting service.
  • StartPoint A theme for theme developers. A good start point to make your own templates. It supports multiple languages, widgets, contains semantic hAtom microformats, and more.
  • Strangelove is a modification of the default Wordpress theme (Kubrick) with hAtom support.
    • It points to the hAtom2Atom proxy service as the link for syndication feeds.


  • Brian Suda has created several XSLT files to extract microformats from HTML. From that the X2V webservice/favelet emerged. The XSLT and favelet extracts hCard and to produces .vcf (vCard) files and hCalendar to produce .ics (iCal) files. Also in the labs is a universal XMDP validator and a site-wide search spider that recognizes 'no-follow', 'license' and other microformats so they can be used in a more semantic way when displaying search results.
    • by


Yahoo Creative Commons Search

Yahoo Local

Yahoo Tech

Yahoo UK Movies


  • Yedda supports hCard for exposing users information, hAtom for exposing data that is already exposed via feeds (like list of questions and answers) and rel="tag" for every tag used to tag questions and users.


This is an alphabetical listing of tools that have been created to validate implementations, and which formats they support.

Please add to this section if you have a validator/checker, no matter which or how many microformats you test for.


Companies / Developers / Organizations

(Considering moving all of these to an implementors page of its own).

Thanks to all of the hardworking developers and innovative companies and organizations for supporting microformats.

This is an alphabetical listing of all companies, developers (by last name) and organizations who have built and shipped at least one implementation (see above for details of each implementation) that users can use.

Please help complete this list! If you have coded support for microformats and don't see your name, add it! If your company supports microformats in its applications, add it!

Note: please add direct links to specific applications, plugins, services, or tools to the list of and then link to those from their implementor with a fragment identifier link, e.g. to link to the "Cork'd" wine review community:

  • [[implementations#Cork'd|Cork'd]]

Similarly, for additional sites, put direct links to them in the section and then link to them from their implementor with a fragment identifier link.

Apple Computer

Apple Computer has implemented microformats in:

Andy Hume

Andy Baio

Assaf Arkin

Brian Del Vecchio

Brian Suda

Chris Casciano

Chris Messina

Chris Saccheri

Calvin Yu

Dan Cederholm

David Janes

David Long and James Myers

Drew McLellan




Gordon Luk

Ingo Renner

Ingo Renner has implemented hCard and XFN in:

James E. Robinson, III

James has implemented hAtom and hCalendar for:

Josh Smith

Kent Brewster

Kevin Marks

Kingsley Joseph

Kingsley Joseph:

Laughing Squid

Leonard Lin


Mark West


Nature Publishing Group

  • Nature Publishing Group are steadily rolling out microformats across their sites and titles. Current implementations include the following online services:
  • as well the following additional site(s):

Remy Sharp

Robert de Bruin

Ryan King

Scott Allan Wallick

Scott Reynen


Steffen Voß

Steve Ivy

Tantek Çelik




Needs Fixing

  • Re-format author names and links to display Surname Firstname - for better indexing, and complete cross-linking Frances Berriman

The following have been moved from the sections above due to problems, stated below:

Web Essentials


Some notes on initial thoughts around Guidelines and Strategies for Implementing Microformats