Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
HodlBot - Cryptocurrency Investing on Autopilot
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
I did NOT buy Bitcoins - How much did you save by not buying Bitcoins?
Bigtent - BigTent is a web-based organization and communication portal for groups.
CryptoGround - Blockchain & Cryptocurrency latest news