Internet services supporting OpenID

Wikitravel is a web-based collaborative travel guide based on the wiki format and owned by Internet Brands. It was most active from 2003 through 2012, when most of its editing community left and brought their contributions to the nonprofit Wikivoyage guide.

AOL Media LLC (formerly a predecessor company known as AOL Inc. and originally known as America Online) is an American web portal and former online service provider based in New York City, and a brand marketed by Italian conglomerate Bending Spoons.

LiveJournal (), formerly stylised as LiVEJOURNAL, is a Russian-owned social networking service where users can keep a blog, journal, or diary. American programmer Brad Fitzpatrick started LiveJournal on April 15, 1999, as a way of keeping his high school friends updated on his activities. In January 2005, American blogging software company Six Apart purchased Danga Interactive, the company that operated LiveJournal, from Fitzpatrick.

SourceForge is a web service founded by Tony Guntharp, Uriah Welcome, Tim Perdue, and Drew Streib in November 1999. It provides a centralized software discovery platform, including an online platform for managing and hosting open-source software projects, and a directory for comparing and reviewing B2B software that lists over 104,500 business software titles. It provides source code repository hosting, bug tracking, mirroring of downloads for load balancing, a wiki for documentation, developer and user mailing lists, user-support forums, user-written reviews and ratings, a news bulletin, micr

F-Droid is a free and open source app store and software repository for Android, serving a similar function to the Google Play Store. The main repository, hosted by the project, contains only free and open source apps. Applications can be browsed, downloaded, and installed from the F-Droid website or client app without the need to register an account. "Anti-features" such as advertising, user tracking, or dependence on non-free software are flagged in app descriptions.

Slashdot (sometimes abbreviated as /.) is a social news website that originally billed itself as "News for Nerds. Stuff that Matters". It features news stories on science, technology, and politics that are submitted and evaluated by site users and editors. Each story has a comments section where users can add online comments. Slashdot also offers a business software comparison directory with over 100,000 software products.

software forge

identi.ca is a free and open-source social networking and blogging service based on the pump.io software, using the Activity Streams protocol. Identi.ca stopped accepting new registrations in 2013, but continues to operate alongside several other pump.io-based hosts provided by E14N which continue to accept new registrations.

WordPress.com is a web building platform for self-publishing that is popular for blogging and other works. It is owned and operated by Automattic, Inc. It is run on a modified version of the WordPress software. This website provides free blog hosting for registered users and is financially supported via paid upgrades, "VIP" services and advertising.

free and open source software microblogging server

Friendica (formerly Friendika, originally Mistpark) is a free and open-source software distributed social network. It forms one part of the Fediverse, an interconnected and decentralized network of independently operated servers.

GNU MediaGoblin (also shortened to MediaGoblin or GMG) is a free, decentralized Web platform (server software) for hosting and sharing many forms of digital media. It strives to provide an extensible, federated, and freedom-respectful software alternative to major media publishing services such as Flickr, DeviantArt, and YouTube.

Diigo is a social bookmarking website that allows signed-up users to bookmark and tag Web pages. Additionally, it allows users to highlight any part of a webpage and attach sticky notes to specific highlights or to a whole page. These annotations can be kept private, shared with a group within Diigo, or be forwarded to someone else via a special link. The name "Diigo" is an acronym from "Digest of Internet Information, Groups and Other stuff".

BuddyPress is an open-source social networking software package owned by Automattic since 2008. It is a plugin that can be installed on WordPress to transform it into a social network platform. BuddyPress is designed to allow schools, companies, sports teams, or any other niche community to start their own social network or communication tool.

Plaxo was an online address book that launched in 2002. It was a subsidiary of cable television company Comcast from 2008 to 2017. At one point it offered a social networking service.

Tistory is a South Korean blog-hosting service that allows private or multi-user blogs.

Zooomr was a website for sharing digital photos.