Featured Site: Evite.com

Boasting that they save “millions of dollars in paper invitations and postage” on a monthly basis, Evite.com is a free service that allows users to send out electronic invitations to events through email. Party-goers can click on a link to RSVP, decline, get directions or further information, and can even see who’s been invited and whether they’re planning on coming — making it invaluable to planners trying to keep everything organized.