Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
ReadBit - Read wisely & save time with text-to-speech audiobook reader
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Listening.io - Turn articles into audio and listen in your podcast app
Bigtent - BigTent is a web-based organization and communication portal for groups.
article2audio - The next generation of text-to-speech focused on web content. It understands and enhances English articles and blog posts beyond just words.