Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Poptop UK - Extraordinary private party experiences and services - private chefs, mobile bars, BBQs, food vans and more!
Ticket Tailor - Ticket Tailor is an easy-to-use event ticketing platform that allows event organizers of all shapes and sizes to sell tickets online.
Ticket Tribe - Sell tickets online with no fees per ticket
SkillMint - Find, meet and rate people with common skills and interests. Community-driven rating system.