Logging in to WordPress would normally require an actual WordPress account. However, Samuel Wood (aka @Otto42), developed a few WordPress plugins to integrate the social service of your choice and login to WordPress with your Facebook, Twitter, or Google+ account.
Login to WordPress with Facebook

Beyond just logging in with Facebook, Simple Facebook Connect offers other features:
- Enables your site to connect to Facebook with JS SDK
- Implements OpenGraph tags, entirely automatically
- Comment using Facebook credentials (with Facebook avatar support)
- Automatically Publish new posts to Facebook Profile or Application or Fan Page
- Manually Publish posts to FB Profile or Application or Fan Page
- Integrate comments made on Facebook back into your own site
- Login with your Facebook credentials, optionally using Facebook avatars instead of Gravatars
- New user registration with Facebook credentials (using the Facebook Registration Authentication system)
- Facebook Photo Album integration in the Media uploader
- Like Button and shortcode
- User Status Widget and shortcode
- Live Stream Widget and shortcode
- Fan Box Widget and shortcode
- Fan Count Chicklet and Widget
- Activity Feed Widget
- “Share” button and Shortcode (reworked version of Like button, as Share button is no longer supported by Facebook)
Plugin on WordPress.orgDownload
Login to WordPress with Twitter

Some of the other features of Simple Twitter Connect are:
- Login using Twitter
- Comment using Twitter credentials
- Users can auto-tweet their comments
- Tweet button (official one from twitter)
- Tweetmeme button
- Auto-tweet new posts to an account
- Manual Tweetbox after Publish
- Full @anywhere support
- Auto-link all twitter names on the site (with optional hovercards)
- Dashboard Twitter Widget
Plugin on WordPress.orgDownload
Login to WordPress with Google+

Simple Google+ Connect has more features beyond just logging in with your Google+ account.
- Enables your site to connect to Google using Google’s various APIs
- +1 button
- Sign in using Google for comments (and use Google based avatars!)
- Login using Google credentials
- Google+ Badges for pages
Plugin on WordPress.orgDownload
Huge props to Samuel for creating some great plugins to make it easier to login to WordPress.



Jonathan Dingman is a passionate blogger who loves writing about WordPress news, reporting on events, theme releases, awesome plugins, and more. He started using WordPress in 2004 and ran the first WordCamp NYC in 2008.
why no single plugin , just like disqus which enables commenting using any of above accounts ?
If that’s what you want, check out this plugin: http://wordpress.org/extend/plugins/oa-social-login/
That plugin is based on the Paid Service,
Doesn’t fascinate me much.
OA Social Login is a paid service, but they have a free option as well, with up to 2,500 users. It’s a very well-designed plugin and the instructions for getting API keys are top notch, with videos as well.
Great, thank you for this article, this is exactly what I was looking for, cheers.