I was an early adopter of Circle when piloting a peer learning group several years back. I held on to my Circle account for a while after that project ended, and have just returned because the interactive features are simply unmatched.
For our community, the discussion feature and gamification/leaderboard elements are what we're learning to lean into from a community-building lens.
From the admin side, setting up automated onboarding emails and the weekly digest has been amazing. Review collected by and hosted on G2.com.
The price is a tad high for us in this start-up phase. That said, virtually all the viable alternatives we considered that would meet (or come close to) our needs are comparably price, or higher. Review collected by and hosted on G2.com.





