Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Punchbowl - A party planning and greeting card website
Invitime - Meet new friends and challenge them to invite you
Invite Share - TechCrunch - Reporting on the business of technology, startups, venture capital funding, and Silicon Valley
RSVP Keeper - Online RSVP's made easy
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.