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Microformats Implementations

This page lists the applications, plugins, sample code, services, tools that produce or consume microformats. This is only a partial list. If you know other services or tools for or supporting microformats, please add them, link to their implementors, and list 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

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 to wiki hyperlink the Name of Developer to a fragment identifier in the implementors page, e.g. Apple Computer would be linked like this: [[implementors#Apple_Computer|Apple Computer]]

Check to see if there is an entry for the developer in the list of implementors, if not add them there. 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 to wiki 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 on the implementors page.


.Mac Webmail


  • AlchemyPoint is a structured web / mashup platform that supports parsing hCard, rel-tag and other microformats.
    • by





  • Bugzilla 3.1.1 includes some microformats on show_bug.cgi and a few other places.


Community Server


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




Delicious Generation


  • Digg supports hCards for profiles and rel-me for identity consolidation (though they currently mix rel-nofollow with rel-me, negating these links).


Microformats Extensions


Upcoming module for Drupal





Flickr People

Flickr Photos

Flock Web Browser

Google Search

Google Blogger

  • Blogger supports hAtom (citation to blog post needed - 2007)
    • by

Google Creative Commons Search

Google Maps

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?


  • Google hCalendar - Adds hCalendar data to Google Calendar.
  • Social xFolk - Adds xFolk links to social bookmarking sites and ma.gnolia.
  • Monkeyformats - a collection of GreaseMonkey scripts that add actual hCard and hCalendar microformat markup to several international phone directories.

hCalendar creator

hCard to Gmail Service

  • hCard to gmail is a bookmarklet / service which will convert hCard formatted data to the .CSV file for importing to gmail.
    • by

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

Helios Calendar

hKit Microformats Toolkit for PHP5

hReview creator

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





Live Clipboard




  • 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.


Mash Maker


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

Movable Type

National eXtension Initiative

Nature Network Boston

Nature Protocols


  • NetNewsWire is an easy-to-use RSS and Atom reader for your Mac. NetNewsWire 3.0 detects, extracts and converts hcard and hcalendar data from feed entries.
    • by

Netscape Navigator




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


Portable Social Network Profile Parser


PostNuke is an Application Framework/Content Management Systeme


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


  • 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

Safari Microformats plugin

The Safari Microformats plugin notifies you when the author of the website has published Microformats and allows you to easily import hCards and hCalendars in Address Book and iCal. This plugin was inspired by the idea and mockup of Jon Hicks.

Safari Microformats Plugin

  • Note - the latest version, 3.1, currently only works w/Mac OS 10.5 (Leopard)


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


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


  • Tweeterboard supports [hcard|hCard]], and XFN on profile pages (example).


  • Twitter supports hAtom, hCard, and XFN.
    • hCards for groups are marked up with "fn" not "fn org". See, for example, microformats on Twitter
    • Improper address mark-up (no child properties; though this may be all that can be achieved, if the user enters a value like "Birmingham, England")
    • Uses class="label" for non-hCard purpose.


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


VIREL Microformats Search Engine




  • 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



  • See XFN visualization example at IBM's Many Eyes made using data extracted with xfn-spider

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.


Search engines

See search engines

Companies / Developers / Organizations

See implementors

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