Sites that accept OpenID logins

Media

• MIT Technology review

Blogging sites

• LiveJournal.com now accepts OpenID logins both for general site sessions through a login page and for one-off comments without an associated login session.
  • Many of the spinoff sites based on the LiveJournal Server code now also support OpenID logins. These include DeadJournal, GreatestJournal, InsaneJournal and LiveJourbal, SviestaCiba, amongst others.
• ipernity - a place to blog, to publish photos, videos, audios and to share everything with friends, family or everybody.
• Blogger.com lets you use your OpenID for commenting.
• Microblogging site Identica accepts OpenID logins.

Wikis

• Tikiwiki Open source wiki/CMS with out-of-the-box OpenID support.
• PBWiki A wiki provider. You need to create an account first, then you can associate an OpenID to it.
• Wikispaces A wiki provider.
• Wetpaint Another wiki provider. OpenIDs accepted at account creation.
• Wikitravel An open content travel guide built by thousands of travelers world-wide. OpenID consumer and identity provider. Uses the OpenID extension for MediaWiki.
• DocForge An open wiki for programmers. OpenID consumer and identity provider.
• LifeWiki.net: this very wiki!
• The Yadis Wiki is a MediaWiki installation with OpenID, Yadis and LID support (subject: identity capability lookup through Yadis)
• The RSS-Extensions Wiki is a MediaWiki installation with OpenID, Yadis and LID support (subject: RSS/Atom Extensions)
• The LID Wiki is a MediaWiki installation with OpenID, Yadis and LID support (subject: Light-Weight Identity)
• The IDMashup Wiki is a MediaWiki installation with OpenID, Yadis and LID support (subject: Digital Identity)
• The MediaWiki installation at Videntity.org has experimental consumer support via this patch.
• The OSIS Wiki is a MediaWiki installation with OpenID, Yadis and LID support (subject: open-source identity selector aka InfoCard aka CardSpace project)

Forums

• UNCENSORED! BBS is a general-purpose discussion forum that has been online since 1988. Chew the fat with some of the hippest cats this side of the web with little to no moderation. Diverse topics from cats to computers, from sex to sports, from food to furniture-building, and more.

Chat rooms

• Pibb is a Souped-up Chat Room Service

Bookmarks/snippet managers

• iTaggz.com - a FREE online bookmark manager. You can tag/categorize your favorite web pages and access them from any computer - be it at home, work, school...
• Friendsnippets A social snippets manager. You can add snippets to your list, categorize them and share with others.

Social networks

• Videntity.org has a social network with support for adding XFN relationships with people owning URLs across the web. Imports and Exports profiles via HCard and FOAF.

Uncategorized

• buzzillions is a product review site.
• Egofolio.com is a tool to help you keep track of content you create across any number of websites. Friends can keep up with you and all of your online activities in one page.
• Tanga.com lists daily deals and user-contributed games and puzzles.
• smallmarble.org collects country-specific colloquialisms, idioms, and practice phrases, including audio recordings of native speakers, all available under a Creative Commons license.
• L8R lets you send email later and is now OpenID enabled.
• Moveable Type through Mark Pasc's plugin
• phpBB consuming support mod demo
• OpenID Enabled - An OpenID developer site running Plone
• Zooomr
• Pyblosxom through the openidenabled.com plug-in
• FoodCandy through the openidenabled.com janrain CSharp library
• Chris Hallgren through plug-in from PHP OpenID from vIdentity
• The NetMesh Developer's Site accepts OpenIDs and LIDs, using Yadis capability lookup whenever possible (subject: NetMesh Developers)
• ClaimID "Manage your online identity." Build a verified link resume.
• GotGravity An OpenID enabled comprehensive information and discussion portal for all things Sky Diving related.
• Jyte Jyte is a site that allows you to make claims about yourself and your friends, give and receive credibility and manage your contacts and groups.
• TrenchMice An open review site for employers and companies. Built with the Django web framework and uses the OpenID python libraries. OpenID consumer only.
• heardontv.com A community website around music in tv shows.
• RUWT? Sports A sports/TV mashup that sends free email or text alerts when televised games get exciting.

See OpenIDWishlist too...

Dead projects:

• SupportOffice.org - A very useful tool for LiveJournal and Plogs.net support volunteers.

Other compilations of OpenID enabled sites

• The OpenID Directory has free submission, every site will be checked for a working OpenID implementation
• OpenID Site Directory from JanRain

Compatible applications

(Note I added this section because I didn't see it fitting logically in any other section on this page, feel free to move about.)

• Prasi implements OpenID authentication from version 1.3 onwards. The users still need to login once using a (afterwards discardable) username/password, then enable an OpenID credential in their profile (which they then can use to login), but this is to maintain the same level of account security as for non-OpenID users.
• Wefis version 1.5 (note: still in beta, not publically available yet) will be bundled with version 1.3 of Prasi so will automatically gain OpenID compatibility at that time. Version 1.4.2 is bundled with Prasi 1.2 so upgrading Prasi to 1.3 will also make Wefis compatible immediately.

Consumer Demos

The following demos don't necessarily implement all of the consumer functionality, but instead provide a simple example of how you might implement a consumer. (or indeed, part of one.)

• Original Demo: the original proof of concept demo, still maintained alongside developments to the consumer library. This demo does full signature verification, so it is a good simple consumer to test an ID server against. AJAX and Classic versions are provided separately so that you can ensure that your ID server works with both.
• Combo AJAX/Classic Demo:� an example of how to combine AJAX and classic modes into a single form and use whichever one is appropriate for a given user's browser. This demo doesn't support the new protocol, but that doesn't really matter since it's just an example of how to do the in-browser bit anyway.
• Mart's guestbook: A very simple consumer implemented as a CGI script. It's written in Perl and uses the Net::OpenID::Consumer module. (Simple mode only, for now.) Source code is available. This consumer operates in "dumb" (stateless) mode, so can be used to test your OpenID server for support. You don't need to actually leave a comment: if you see the comment entry form, you've authenticated successfully.
• Brent Dax's demo� is designed to show how a real site might implement OpenID in a fairly pretty way, at least in Firefox.
• sneak's demo is another stateless consumer, this time in PHP. Full source code is available. This will soon be integrated into Ichiban.
• libopkele demo is a full-blown consumer done in C++ using libopkele, which does nothing but consumes identities.
• Dave Holland's guestbook demo is another simple OpenID-based guestbook, implemented as a Perl CGI script using Net::OpenID::Consumer. The source is available.
• NetMesh's FirstSSO Demo shows serving different content to different people in PHP, Java and Perl implementations

Code libraries

The following libraries are available to make it easier to implement a consumer. Currently the list is very small, but we will work on that in the coming weeks.

Perl

• Net::OpenID::Consumer (available from CPAN)
• NetMesh InfoGrid LID Perl OpenID, Yadis and LID support

PHP

• "PHP-OpenID" OpenID server and consumer library based on the python library. Complete, with examples. Should work on PHP >= 4.1.0 and does not require PEAR.
• "OpenLID" combines LID and OpenID into one library (extremely easy to use API). Supports DH key encryption via PHP or a Python/Perl fallback. Comes with a wrapper for profile retrieval, which however can be left out.
• OpenId for Wordpress Currently in very early beta.
• NetMesh InfoGrid LID PHP OpenID, Yadis and LID support
• OpenID extension for MediaWiki. A MediaWiki plugin that acts as a consumer and an identity provider.

C++

• http://kin.klever.net/libopkele/ - C++ OpenID server and consumer support library.

Java

• http://www.idprism.org/ OpenID server and consumer
• NetMesh InfoGrid LID Java OpenID, Yadis and LID support

.NET

• http://openid.nterface.com/ - .NET OpenID consumer library written in C#.
• http://www.openidenabled.com/openid/libraries/csharp - .NET OpenId consumer library from JanRain

Python

• http://openidenabled.com/openid/libraries/python - OpenID server and consumer

Ruby

• http://openidenabled.com/openid/libraries/ruby - Ruby port of the Python OpenID library. Easy integration for rails users.

Others?

Fancy implementing a consumer library for your favourite language/platform? See the specs for how it works, and join the mailing list if you have any questions.