Based on our record, Mobilizon seems to be more popular. It has been mentiond 7 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Consider something like Mobilizon[0] - it's ActivityPub based, like Mastodon, but apart from the federation capability, might have the feature set you're looking for? [0] https://joinmobilizon.org/en/. - Source: Hacker News / 2 days ago
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 - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Google Groups - Google Groups allows you to create and participate in online forums and email-based groups with a rich experience for community conversations.
Facebook Local - Discover places to go and events happening near you
Nabble - Nabble is a forum software that are embeddable and fully customizable with scripting language.
DownToMeet - DownToMeet is a platform to organize, find, and attend group events.
Mighty Networks - Mighty Networks enables entrepreneurs, organizations, and companies to create and grow a community-powered brand.