Gitscout - A beautiful Github Issues experience for macOS
Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Shrink for Github - A macOS app for your Github issues
Facebook Local - Discover places to go and events happening near you
GitHub Reader - A quick way to browse GitHub issues and pull requests.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets