thenbrent

Looking for maintainers. This plugin is currently not maintained. If you would like to take over the development please let me know using the plugin support forum or GitHub issue system.
WordPress Social Login is a good alternative to this plugin:
https://wordpress.org/plugins/wordpress-social-login/
Social Connect adds social login buttons on the login, register and comment forms of your WordPress site.
The buttons offer login and registration using a Twitter, Facebook, Google, Yahoo or WordPress.com account.
It makes it super easy for new members to register with your site and existing members to login.
<h4>Props</h4>
Special thanks to:
<ul>
<li><a href="https://wordpress.org/support/profile/markusdrake" rel="ugc">markusdrake</a> for patches and helping in the support forums;</li>
<li><a href="https://wordpress.org/support/profile/enochfung" rel="ugc">L D</a> for patches and helping in the support forums;</li>
<li><a href="https://wordpress.org/support/profile/geodanny" rel="ugc">Geodanny</a> for helping in the support forums; and</li>
<li><a href="http://blog.wirone.info/" rel="nofollow ugc">Wirone</a> for polish translation and patches.</li>
</ul>
And everyone else in the forums sharing the fixes they find and answering each others questions.
<h4>Contribute</h4>
Social Connect is rapidly growing in popularity and help with the growing pains is appreciated.
If you’re a developer, you can contribute fixes & optimisations via <a href="https://github.com/thenbrent/social-connect" rel="nofollow ugc">Social Connect on GitHub</a>.
Everyone can help out by answering questions in the <a href="https://wordpress.org/tags/social-connect?forum_id=10#postform" rel="ugc">Support Forums</a>.

Social Connect

Allow your visitors to comment, login and register with their Twitter, Facebook, Google, Yahoo or WordPress.com account.

Automattic

Matt Mullenweg

Peter Westwood

Michael Adams (mdawaffe)

Ryan Boren

Andy Skelton

Barry

vnsavage

WordPress VIP

HyperDB is a very advanced database class that replaces a few of the WordPress built-in database functions. The main differences are: 
* HyperDB can be connect to an arbitrary number of database servers, 
* HyperDB inspects each query to determine the appropriate database.
It supports:
<ul>
<li>Read and write servers (replication)</li>
<li>Configurable priority for reading and writing</li>
<li>Local and remote datacenters</li>
<li>Private and public networks</li>
<li>Different tables on different databases/hosts</li>
<li>Smart post-write master reads</li>
<li>Failover for downed host</li>
<li>Advanced statistics for profiling</li>
<li>WordPress Multisite</li>
</ul>
It is based on the code currently used in production on WordPress.com with many MySQL servers spanning multiple datacenters.

HyperDB

HyperDB is a amazing feature.


	You want to make two websites share a (user) table? OK!
	You want to make a website use two databases so we can create a development workflow to "deploy" content in the same time we persist production data? OK!
	And so on...


Of course is unnecessary to talk about how it can help in scaling... Just perfect.


It's just amazing!

This plugin works very well with AWS RDS and read replica.

Works very well with RDS and read Replica

Maybe this plugin is not so popular because many WordPress users are just not technical users, but I truly glad the plugin is here, and hopefully the WordPress team still always have a time to maintenance this :)

Kudos! 

A hidden gem

HyperDB is an advanced database class that supports replication, failover, load balancing, and partitioning.

Social Connect vs HyperDB