Modules, resources and articles that will help you integrate your Drupal installation with other social networks. Jan 24
Disqus DISQUS is a comments platform that helps you build an active community from your website's audience.
Provides integration with FriendFeed . Features FriendFeed
Facebook & Drupal
Twitter & Drupal
Google & Drupal
The Janrain Engage module (formerly RPX) integrates Drupal sites with the powerful Janrain Engage service. Janrain Engage (formerly RPX)
The Gigya Drupal module provides allows you to easily embed Gigya’s wide range of social login, sharing and community features throughout your Drupal site. Gigya - Social optimization