nopCommerce 🧰 Platform Open source

nopCommerce is a free, open-source shopping cart built on ASP.NET Core, first released in 2008 and still actively developed by nopSolutions. It is software you install and run yourself, not a hosted platform or a revenue-share network, so there is no take rate or payout schedule attached to it at all — you sell through your own payment gateways and keep 100% of revenue.

Out of the box it handles multi-store, multi-vendor and multi-currency catalogs, physical and digital products, discounts, gift cards, tax rules and a large plugin/theme marketplace covering shipping carriers, payment gateways (Stripe, PayPal, Braintree, Authorize.Net and more) and marketing tools. Because it runs on .NET, it scales well on Windows or Linux servers and appeals to teams that already have C#/.NET developers on staff.

Who it suits: agencies and in-house dev teams building a mid-to-large B2B or B2C store who want full source-code control and no per-transaction platform fee, and who are comfortable managing their own hosting, updates and security patching. It is a poor fit for non-technical solo creators — there's no one-click hosted tier, so you (or a hired developer) own server setup, SSL, backups and upgrades.

Standout features: a mature multi-vendor marketplace mode, strong B2B functionality (quote requests, customer role pricing), a long track record (10k+ GitHub stars, large plugin ecosystem), and a genuinely free core with paid official plugins/themes as the main monetization path for the vendor.

Requirements: a Windows or Linux server capable of running ASP.NET Core plus a SQL Server (or compatible) database — meaningfully more infrastructure than a PHP stack like WooCommerce.

Bottom line: one of the most established open-source e-commerce platforms available, best for technical teams that want control and are willing to self-host; not for anyone wanting a plug-and-play storefront.