As mentioned above, Virto Commerce, an open source ecommerce platform, has a paid marketplace edition that can be used to extend the functionality of any existing ecommerce solution without replatforming. Magento, CS-Cart, and Broadleaf are among Virto Commerce’s open source alternatives that also offer paid marketplace functionality. Although not mentioned in the article, Shuup is another ecommerce marketplace software that can be considered. With Shuup, you can either launch a SaaS marketplace or build a custom marketplace of your own.