Potluck - A better way to plan things with your friends
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Giftwalker - Free kid's party planning and gifting app
pretix - pretix helps you to sell tickets for your event in an easy way. It supports multi-lingual events and provides a wide range of features
Asana - Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.
Ticket Tribe - Sell tickets online with no fees per ticket