Meetup

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

(FREE) Meetup is a free service. However, they limit the number of requests you can make.

Given name of meetup group, get a list of members.

See relevant information about past and upcoming events for a...

Given a Meetup user's ID, get information about them and thei...

Given ID of an event, get people that RSVP'd yes. Use the ...