Punchbowl - A party planning and greeting card website
BeingSo - Send free animated greeting cards, birthday invitations.
RSVPify - A powerful and awesomely customizable platform for selling tickets online for your event.
Rundavoo - Rundavoo helps you gather friends together for any occasion.
Whoozin.com - Free RSVP Online | Track RSVP’s and Sell Tickets for your events and recurring meetings.
JustRSVP.me - Online Invitations and response tracking for weddings, baby showers, birthdays, parties, and other...