One ecommerce platform that allows multiple vendors is Shopify.

Shopify is a popular ecommerce platform that allows businesses to create and manage their online stores. It offers a feature called "Shopify Multi-Vendor Marketplace" which enables multiple vendors to sell their products on a single platform.

With the Shopify Multi-Vendor Marketplace, each vendor can have their own storefront within the main website, allowing them to manage their inventory, pricing, and orders independently. Vendors can also customize their storefronts to reflect their brand and style.

This platform provides a seamless shopping experience for customers, as they can browse and purchase products from multiple vendors in one transaction. Additionally, Shopify offers built-in payment gateways and shipping integrations, making it easy for vendors to receive payments and fulfill orders.

Shopify also provides various tools and features to help vendors manage their businesses effectively. Vendors can track sales, manage inventory, and analyze performance through the Shopify dashboard. They can also leverage marketing tools like discounts, promotions, and SEO optimization to attract customers and increase sales.

In terms of references, you can visit the Shopify website (www.shopify.com) to explore their Multi-Vendor Marketplace feature and learn more about how it works. Additionally, there are numerous case studies and success stories available online that showcase businesses using Shopify's multi-vendor capabilities, such as the "Shop" section on the Shopify website.