Calendify - Calendify is an event community where you can share, publish, and subscribe to event calendars. It helps you to stay informed about what you are interested in and what is yet to come.
PartyWith - Connecting people who love to party - anytime, anywhere.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Party with a Local - Party with a Local is a free app that connects travelers with locals that want to party.
Meetup for iOS and Android - Discover groups that are all about the things you love
Party Bot - A bot that helps find the best parties happening near you.