Double - Tinder for double dates

Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.

Hater - The dating app that matches you based on what you hate

Google Groups - Google Groups allows you to create and participate in online forums and email-based groups with a rich experience for community conversations.

Tinder - Tinder is how people meet. It's like real life, but better.

Eventbrite - Discover Great Events or Create Your Own & Sell Tickets