Facebook for Business - Facebook Business gives the latest news, advertising tips, best practices and case studies to meet the business goals.
Jetpack - Jetpack offers SEO and security plugins for Wordpress.
SocialPilot - SocialPilot is an app designed to help businesses and professionals with social media marketing.
WP User Manager - The most customizable profiles, community builder and membership WordPress plugin
Buzzstream - Build Relationships. Build Buzz. Web-based software that helps the world’s best marketers promote their products, services and content.
UpStream Plugin - UpStream Plugin is a free-to-use project management plugin that allows you to manage various types of projects right from your WordPress site.