One club is active once a month or so. All can be found easily on Google. I have been to the most active one a couple of times, but generally the scene was not a match to me or my partner at the time---I'll just say that. Boston is not known for its swing clubs. You'll want NYC, Montreal, Miami, Amsterdam, London, etc for that. Best bet for Boston is the Fetlife website or SLS website and meeting individual couples. As far as I am aware