OpenID Observatory

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OpenIDs already checked: 1144

OpenID Identifiers Protocol

Distribution of the protocol used in OpenID identifiers.
OpenID Identifiers Domains

Most common domains used in OpenID identifiers
OpenID Providers (%)

Most common providers used by OpenID identifiers
Web Standards (%)

Main web standards found in OpenID's HTML
HTML HEAD Links (%)

Most common link types found in OpenID's HTML
Microformats (%)

Microformat types found in OpenID's HTML
hCard vs FOAF (%)

Two ways of format personal information, HTML semantic markup and Semantic Web
Deployed OpenID Protocol Versions

OpenID protocol versions currently deployed and announced by identifiers
OpenID Discovery Technologies (%)

OpenID can be discovered both by a HTML header link or using Yadis discovery
OpenID Protocol Versions in HTML discovery

Distribution of OpenID versions announced in HTML
OpenID Protocol Versions in Yadis discovery

Distribution of OpenID versions announced in Yadis
XRDS service types (%)

Most common service types announced in XRDS files