Q Marketplace - Schedule, book, manage and pay for office services
Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Couchmates - Transforms your roommate into your personal couch concierge
Event Hunt - Startups and Tech Events Curated By Locals
Prefer - Professionals you need, from people you know
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets