Google Groups - Google Groups allows you to create and participate in online forums and email-based groups with a rich experience for community conversations.
Jukely - Go to hundreds of concerts for one monthly fee 💃
DownToMeet - DownToMeet is a platform to organize, find, and attend group events.
Nightout - The standard in event ticketing and marketing by NIGHTOUT
Mighty Networks - Mighty Networks enables entrepreneurs, organizations, and companies to create and grow a community-powered brand.
Sporteventus for iOS - The worldwide search engine for sporting events and tickets