Facebook Events - Facebook Events enables businesses to organize gatherings, manage invitations and send notifications and reminders to their audience.

Facebook for Business - Facebook Business gives the latest news, advertising tips, best practices and case studies to meet the business goals.

Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.

SocialPilot - SocialPilot is an app designed to help businesses and professionals with social media marketing.

Eventbrite - Discover Great Events or Create Your Own & Sell Tickets

Buzzstream - Build Relationships. Build Buzz. Web-based software that helps the world’s best marketers promote their products, services and content.