Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
RingCentral - RingCentral is the leading provider of cloud-based communications and collaboration solutions for small business and enterprise companies
Event Hunt - Startups and Tech Events Curated By Locals
Dialpad - Switch is a cloud-based phone system built for Google Apps users.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Aircall - Aircall is a call center software of a new generation designed for fast growing companies. Setup instantly and integrates to your CRMs