Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Telbee.io - telbee adds voice messaging to podcasts, websites, social media and email to easily hear from and build human relationships with your customers and community - save time, reduce frustration, and gain sales, understanding and fans
Event Hunt - Startups and Tech Events Curated By Locals
Vocaroo - Vocaroo is a quick and easy way to share voice messages over the interwebs.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
statuspage - A simple self-hosted status page site with an API written in Django under the BSD license.