Private Retailer Marketplaces

Expand your assortment

Speed up time to market and activate suppliers quickly.

Increase your product offerings without the inventory overhead. With Rithum’s Private Marketplace, you can select sellers, enforce fulfillment standards, and build a curated, brand-safe experience that aligns with your business goals. It’s a scalable, flexible way to grow, while staying in control.

Launch and scale private marketplaces with confidence

Rithum helps you build curated private marketplaces where you can expand assortments and protect your brand identity and customer experience. You can delegate operational tasks to sellers while keeping full visibility and control. You decide how much governance to apply—ensuring trust, consistency, and growth on your terms. 

Test new products without the risk 

Private marketplaces are a great way to boost revenue potential by testing new products and categories. For example, you may not be ready to invest in inventory for a category for your wholesale or even commit to it as part of your dropship program. Launching a private marketplace is a low-risk way to gauge customer interest. 

Curate seller onboarding 

Ensure alignment with your brand standards and values by approving only trusted sellers and products. Our streamlined onboarding process makes it fast and easy for sellers to join—without compromising quality of the customer experience. 

Uncompromised customer experience 

Standardize fulfillment and presentation across your marketplace to give customers the reliable, branded experience they expect. 

Full operational oversight 

Monitor seller compliance with SLAs and performance benchmarks. Quickly address issues before they impact your business. 

Strategic marketplace alignment 

Tailor your private marketplace to your strategic ambitions—whether it’s supporting exclusive product partnerships, perfecting product assortments, or improving your profit margins. Rithum is hyper-customizable to your objectives, for smarter, faster, and more efficient business growth.

Curate the right sellers for your private marketplace

SupplyExplorer supports private marketplace growth by helping retailers identify, evaluate, and connect with suppliers that align with their marketplace strategy. With curated, data‑driven supplier recommendations and detailed supplier profiles, teams can confidently expand assortments, test new categories, and build trusted seller relationships before activating suppliers within their private marketplace.

Curate the right sellers for your private marketplace

How it works

Approve and onboard sellers and products

Define standardized marketplace terms (no need to negotiate individual contracts for every vendor) and only onboard authorized vendors that meet your brand, category, and quality standards. We make it easy for sellers to map product content, pricing, and inventory to your taxonomy.

Integrate seller workflows with simple catalog management

Set custom commission structures and enable sellers to list and manage inventory, fulfillment, pricing, create promotions, and support customers all within your private marketplace.

Monitor and maintain standards

Track seller performance, fulfillment status, and compliance to ensure a consistent customer experience.

Not ready for a Private Marketplace? 

Explore our dropship solution instead. Rithum unifies dropship and private marketplace management, so you can shift sellers, products, or entire assortments between models with ease. Through a single integration and set of tools you can readily move sellers, assortments or individual products to the optimal model to achieve profitability goals.

Learn about dropship

Rithum results in action 

Retailers use Rithum to power curated marketplaces that scale without compromising control. Read how we helped: 

  • Marks & Spencer (M&S) quickly expand assortment, boost customer engagement and loyalty, and attract new customers, while maintaining profitability with more agile and flexible merchandising and fulfillment. 
  • Michaels arts and crafts retail chain to deliver an expanded assortment of products in a seamless shopping experience, as well as a best-in-class experience for marketplace sellers. 

Grow your assortment and keep control of your brand.

A private marketplace lets you expand what you sell without expanding your inventory risk. Rithum helps retailers launch and scale curated marketplace programs with seller onboarding, performance reporting, and governance tools to keep quality high as you grow.

  • What is a private marketplace, and how is it different from an open marketplace?

    A private marketplace is a retailer-controlled model where selected sellers offer products on the retailer’s site under the retailer’s rules and brand standards. Unlike an open marketplace, the retailer controls seller participation, assortment, and operating requirements.

  • How is a private marketplace different from traditional dropship, and can I run both together?

    In dropship, the retailer usually controls the product listing, customer experience, and pricing structure while the supplier fulfills the order. In a private marketplace, sellers typically have more control over pricing, shipping, and service responsibilities and operate on a commission-based model. Rithum supports running both models together so retailers can use each where it fits best.

  • What does the seller onboarding process look like?

    Seller onboarding typically includes platform connection, catalog and inventory setup, agreement to marketplace terms, and quality checks before launch. Timing depends on seller readiness, catalog complexity, and any retailer-specific requirements.

  • How does a private marketplace help reduce inventory risk and improve cash flow?

    Because sellers own and fulfill the inventory, retailers can expand assortment without purchasing, storing, or markdown-managing those products themselves. That can reduce inventory risk and improve cash flow compared with owned-inventory models.

  • Can I scale a private marketplace globally or offer cross-border sales?

    Rithum supports global commerce operations, and private marketplace models can expand across regions when sellers are able to meet local fulfillment and compliance requirements. Cross-border success depends on the sellers, target markets, and operating rules involved.

Ready to unlock new revenue streams?

Grow your online assortment without compromising on quality, control, or customer trust. Let’s build your private marketplace—your way.