I like their approach to meet people. You get automatically dropped into interest groups and it's all anonymous. The barrier to meet up is quite as you have a common interest and it is in group.
We3 - AI that finds you the most compatible people nearby
Cvent - Cvent's event management software provides event planners with a complete solution to increase event attendance and decrease event costs.
Meetup for iOS and Android - Discover groups that are all about the things you love
Eventzilla - Eventzilla lets you sell tickets online and manage attendees from one integrated application.
Bumble - Bumble is a social network that allows you to feel empowered while you make those connections, whether you’re dating, looking for friends, or growing your professional network. One first move on Bumble could change your life.
Attendify - Develop relationships at the events that you attend by creating smaller events with just a few people.