attending.io - Tiny event pages to ask people one question – are you attending? Twitter login.
Wave Let’s Meet App - Wave Let’s Meet App allows users to share their accurate location with their friends and family members on a private map so they can get lost.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Vistar - Vistar – Live Video Chat & Make Friends app allows users to enjoy video and voice chatting with their friends and family members right through their mobile phones.
Alf.io - Looking for a solid open source alternative to EventBrite or MeetUp? Discover Alf.io! Keep control your event and your data with Alf.io. Get started today!
Patook - Platonic Friend Making and Community App