For anyone looking for a non commercial option, https://joinmobilizon.org/en/ has made some great improvements lately. - Source: Hacker News / 5 months ago

Framasoft is also involved in the development of Mobilizon, a decentralized and federated alternative to Facebook Events. Source: about 1 year ago

Framasoft is also involved in the development of Mobilizon, a decentralized and federated alternative to Facebook Events. Source: over 1 year ago

Not sure it covers all your requirements, but have you looked at Mobilizon (meetup.com alternative)? Source: about 2 years ago

Meetup is alive, but it is more or less as you say, the groups has cost (normally the people from a group paid together). There is a free software alternatives (but I don't know if there are good servers with a lot of people and groups running): https://joinmobilizon.org/en/. - Source: Hacker News / about 2 years ago

Citizen does this (https://citizen.com) I used it for a bit, and it had decent UX, but it seems designed to raise your anxiety until you pay for a snake oil subscription. YMMV. - Source: Hacker News / 6 months ago

I hear sirens! The Phoenix Fire Board is a real-time list of car accidents (Code '962'), fires, and hazardous situations. You can also check out the Citizen App that people use to report things happening around them. Source: 12 months ago

Https://citizen.com I’m guessing this is what they’re talking about. Source: about 1 year ago

They don't. Citizen App probably what you want, but it's only useful in big cities. Source: about 1 year ago

Should I also "chill out" and not tell them about https://smart911.com, https://www.911cellular.com, https://active911.com, https://citizen.com, and all the other emergency related services out there?! Source: about 1 year ago