Whoozin.com - Free RSVP Online | Track RSVP’s and Sell Tickets for your events and recurring meetings.
Punchbowl - A party planning and greeting card website
RSVPify - Create an elegant online RSVP for your wedding or special event.
JustRSVP.me - Online Invitations and response tracking for weddings, baby showers, birthdays, parties, and other...
Evite - Send online invitations for all occasions by email or text message. Create invites for birthdays, baby showers, save the dates, or customize your own design.
RSVP Keeper - Online RSVP's made easy