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.

Splitwise - Splitwise is a free tool for friends and roommates to track bills and other shared expenses, so that everyone gets paid back. On the web, iPhone, and Android!

Eventbrite - Discover Great Events or Create Your Own & Sell Tickets

Punchbowl - A party planning and greeting card website

Jurnee - Jurnee is an all-in-one platform to book and plan corporate events, get access to event services across the world, manage budgets and streamline payments.

Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.