* Self hosted using wordpress or (maybe) drupal. Both have event managing plugins. * As funny as it might be, a subreddit. reddit meetups use subreddits for tr

* Self hosted using wordpress or (maybe) drupal. Both have event managing plugins. * As funny as it might be, a subreddit. reddit meetups use subreddits for tracking just fine, I suppose a HN meetup could as well. The overlap between platforms is probably pretty high. In fact my recommendation would be to see if there's an existing reddit meetup group, and if any of them would be interested in a HN/tech meetup. * Discord server with pinned messages for pending meetups.