Radius
https://radius.to/ - a Meetup.com alternative of sorts - with fairer organiser pricing for smaller groups. I posted a Show HN [1] here a while back, got tons of great feedback, and have been slowly improving it since, with little marketing. Planning a re-launch here soon. Recently shipped lightweight events called activities, to allow people to meet each other more easily through things they're doing - i.e. "John is going for a cycle tomorrow". [1] https://news.ycombinator.com/item?id=40717398