Meetup.com is an event silo for creating and/or finding small gatherings in your local community who share your interests, sometimes used by some Homebrew Website Club cities to organize local HWC meetups, acquired in 2017 by WeWork.
(this section is a stub, please expand it if you're a user of meetup.com)
- create groups
- create events in groups
- join groups
- RSVP and/or post comments to events
- API: https://www.meetup.com/meetup_api/