What are some alternatives?
When comparing osCommerce and Yo!Kart, you can also consider the following products
WooCommerce - A freely available eCommerce plugin that enables shop facilities on your WordPress website. Functionality enabling extensions & beautiful themes available.
Magento - Magento is the eCommerce software and platform trusted by the world's leading brands. Grow your online business with Magento.
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.
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.
OpenCart - A free shopping cart system. OpenCart is an open source PHP-based online e-commerce solution.
Jumpseller - Start Your Online Store! Grow your business.