Circle.so is a popular option these days.
Discourse too.
I would seriously consider Forem too.
We used Ning back in the day and ended up going for Discourse, we moved over a few years ago now though and there are so many options available today, the trouble is choosing something that has long term potential so that you don't end up with in the same situation as with Ning and FB.
But perhaps the reality (and the challenge) is that these days it's nearly impossible to have community all in one place, everyone is dispersed.
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Circle.so is a popular option these days.
Discourse too.
I would seriously consider Forem too.
We used Ning back in the day and ended up going for Discourse, we moved over a few years ago now though and there are so many options available today, the trouble is choosing something that has long term potential so that you don't end up with in the same situation as with Ning and FB.
But perhaps the reality (and the challenge) is that these days it's nearly impossible to have community all in one place, everyone is dispersed.