Neither Magento Open Source nor Shopify Plus offers a free trial.
Magento Open Source is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
Shopify Plus is designed for and Large Enterprises.
Pricing details for both Magento Open Source and Shopify Plus are unavailable at this time. Contact the respective providers for more information.
Some top alternatives to Magento Open Source includes WooCommerce, Shopify Plus, BigCommerce, Shopify, AmeriCommerce, Elliot, Quick eSelling, CommerceUp, Purchase Commerce, Adobe Commerce, Web.com and iSeller.
Some top alternatives to Shopify Plus includes Sharetribe, WooCommerce, BigCommerce, Square Ecommerce, Shopify, AmeriCommerce, Ecwid, Salesforce B2C Commerce, Magento Open Source, NetSuite SuiteCommerce, WebCommander and Web.com.