EventBrite Online RSVP - EventBrite Online RSVP is a cost-effective event management software that provides services to help businesses organize, invite people together for an event, and sell tickets.
TicketHarbor - The safer Craigslist for P2P ticket exchanges
Rsvpify Virtual Events - Rsvpify Virtual Events is an event management tool that provides you various functionalities ranging from setting up the entire event to selling the tickets online to the targeted audience.
Nightout - The standard in event ticketing and marketing by NIGHTOUT
Whoozin.com - Free RSVP Online | Track RSVP’s and Sell Tickets for your events and recurring meetings.
Sporteventus for iOS - The worldwide search engine for sporting events and tickets