Facebook Login
trend
435,927 websites

Facebook Login is free to use

https://developers.facebook.com/products/login/

Use your Facebook account to sign into other sites and see what your friends are doing across the web.

VS

Google+ Sign-In Button
trend
74,184 websites

Google+ Sign-In Button is free to use

https://developers.google.com/+/web/signin/

Google+ Sign-In button allows users to authenticate on websites using their Google+ account.

Market Share by Top Websites

1 Facebook Login is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.

2 In terms of market share, Google+ Sign-In Button is clearly lagging behind, losing to Facebook Login in all segments.

Websites Categories

1 Facebook Login has better usage coverage in more websites categories. Including People & Society, Business & Industry, Internet & Telecom, Arts & Entertainment and 235 other categories.

2 Google+ Sign-In Button is leading in Directories.

Geography

1 Facebook Login is leading in most countries, including United States, Turkey, India, Russia and 196 other countries.

2 Google+ Sign-In Button is leading in El Salvador.