Upcoming.org might be a bit more popular than Meetabit. We know about 1 link to it since March 2021 and only 1 link to Meetabit. 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.
Just to provide another data point, I've been running the HelsinkiJS meetup (https://helsinkijs.org/) for 12 years and our upcoming event has had 230+ people register within a day, which is a record. We've also got sponsors lined up for the next 6+ months. I should add that we ended up building https://meetabit.com/ to make it easier to run the events and it's now being used by around 10 tech meetups in Finland.... - Source: Hacker News / 4 months ago
Https://upcoming.org/ covers this use case. It was sold to Yahoo a while back but then after shutting it down, Yahoo offered to sell it back to the original authors. https://upcoming.org/about. - Source: Hacker News / almost 3 years ago
Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
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.
DownToMeet - DownToMeet is a platform to organize, find, and attend group events.
Morse - Create, shout out, and discover nearby events in real time
Introwise - All-in-one scheduling and business management platform for coaches, tutors and consultants to run their business online.
Vamos - Local Event Discovery