1
OpenID is leading in The Entire Web.
2
Google+ Sign-In Button is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
1
OpenID has better usage coverage in more websites categories. Including Science & Education, Community & Society, Arts & Entertainment, Computers Electronics & Technology and 19 other categories.
2
Google+ Sign-In Button is leading in Business & Consumer Services.
1
OpenID is leading in most countries, including United States, Indonesia, United Kingdom, Spain and 134 other countries.
2
Google+ Sign-In Button is leading in India, Japan, China, Ukraine and 19 other countries.