WooCommerce - A freely available eCommerce plugin that enables shop facilities on your WordPress website. Functionality enabling extensions & beautiful themes available.
Cvent - Cvent's event management software provides event planners with a complete solution to increase event attendance and decrease event costs.
PrestaShop - Create your online store with PrestaShop's free shopping cart software. Build an ecommerce website for free and start selling online with hundreds of powerful features.
EventMobi - EventMobi is an interactive mobile event app, audience response and engagement platform for conferences and trade shows.
Shopify - Shopify is a powerful ecommerce platform that includes everything you need to create an online store and sell online. Try it free for 14 days.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets