Punchbowl - A party planning and greeting card website
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
RSVPify - A powerful and awesomely customizable platform for selling tickets online for your event.
Cvent - Cvent's event management software provides event planners with a complete solution to increase event attendance and decrease event costs.
Online-RSVP.com - Beautiful online RSVP for wedding & other events. Create an online invitation, track your guests responses.
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.