I have made a list of platforms where you can create your community and share your knowledge in a closed circle (and in some cases sell memberships).

The list is according to my preferences, so the platforms I use the most are at the top.

No, at this time, I do not mean social media but something like an enclosed community for the core (top-tier customers).

On Friday, I had a call with a marketing manager at @Crisp and he mentioned this thing.
I know there are more companies that are trying to create more personal connections with paying clients and network among themselves. I love community management, wanna learn from the best and apply the best practices.