Best Multi-Channel Inventory Software (2026)

Best Multi-Channel Inventory Software in 2026

Selling on multiple channels is great for revenue but creates inventory complexity. One sale on Amazon shouldn't cause a stockout on Shopify. Here are the best tools to keep everything coordinated.

Quick Recommendation

Best for Shopify + Amazon: ReplenishRadar - Purpose-built for Shopify and Amazon with unified forecasting.

Best for many marketplaces: Sellbrite - Great listing sync across eBay, Etsy, Walmart, and more.

Best for enterprise: Cin7 or Extensiv - Full operations platforms for complex businesses.

Top Multi-Channel Inventory Tools

1. ReplenishRadar - Best for Shopify + Amazon

ReplenishRadar is built specifically for sellers who run both Shopify and Amazon and need coordinated inventory planning.

Key strengths:

• Unified inventory view (Shopify + Amazon FBA + warehouse)
• Demand forecasting across both channels
• Prevents one channel from stealing the other's stock
• FBA transfer recommendations
• Purchase order workflow

Best for: D2C brands and resellers on Shopify + Amazon.

Pricing: $29-$299/month. 14-day free trial.

2. Sellbrite - Best for Many Marketplaces

Sellbrite excels at listing management and inventory sync across many selling platforms.

Key strengths:

• Connect Shopify, Amazon, eBay, Etsy, Walmart, and more
• Centralized listing creation
• Inventory quantity sync
• Bulk operations

Limitations:

• Not a forecasting tool
• Basic inventory tracking (not planning)

Best for: Sellers on 4+ marketplaces who need listing management.

Pricing: Starting around $29/month.

3. Cin7 - Best for Wholesale + E-commerce

Cin7 combines e-commerce with B2B operations for brands selling direct and through retailers.

Key strengths:

• B2B portal for wholesale
• Multi-location inventory
• EDI connections
• E-commerce channel integrations

Limitations:

• Complex setup
• Higher price point
• May be overkill for D2C-only

Best for: Brands with both wholesale and direct channels.

Pricing: Starting around $349/month.

4. Extensiv (Skubana) - Best for Enterprise Operations

Extensiv is an enterprise operations platform for high-volume multi-channel sellers.

Key strengths:

• Advanced order routing
• Multi-warehouse management
• Deep automation rules
• Comprehensive reporting

Limitations:

• Enterprise pricing
• Significant implementation
• Overkill for smaller operations

Best for: High-volume sellers with complex fulfillment needs.

Pricing: Custom quotes.

5. Ordoro - Best for Shipping + Basic Inventory

Ordoro combines shipping with inventory management for multi-channel sellers.

Key strengths:

• Shipping rate shopping
• Label printing
• Basic inventory tracking
• Multi-channel order management

Limitations:

• Not forecasting-focused
• Inventory features support shipping workflow

Best for: Sellers prioritizing shipping efficiency with basic inventory needs.

Pricing: Starting around $59/month.

Comparison Table

Tool	Best For	Channels	Forecasting	Price From
ReplenishRadar	Shopify + Amazon	2	Yes	$29/mo
Sellbrite	Many marketplaces	10+	No	$29/mo
Cin7	Wholesale + DTC	Many	Yes	$349/mo
Extensiv	Enterprise ops	Many	Yes	Custom
Ordoro	Shipping + inventory	Several	No	$59/mo

The Multi-Channel Challenge

Problem 1: Inventory Visibility

Each channel shows its own inventory. You need a unified view of:

• What's in your warehouse
• What's at FBA
• What's at 3PLs
• What's in transit

Problem 2: Demand Coordination

If you sell 10/day on Shopify and 20/day on Amazon, forecasting must account for combined demand (30/day), not each channel in isolation.

Problem 3: Allocation Decisions

With limited inventory, which channel gets priority? Should you:

• Keep more at FBA for Prime eligibility?
• Reserve stock for Shopify's higher margins?
• Split evenly?

Problem 4: Oversell Prevention

Without real-time sync, selling on one channel can oversell another. Solutions:

• Real-time inventory sync
• Safety buffer on each channel
• Unified inventory pool

How to Choose

Choose ReplenishRadar if:

• Your main channels are Shopify and Amazon
• Demand forecasting is the priority
• You want unified planning, not just sync
• You need FBA transfer recommendations

Choose Sellbrite if:

• You sell on 5+ marketplaces
• Listing management is the bottleneck
• Inventory sync (not forecasting) is sufficient
• You need bulk listing tools

Choose Cin7 if:

• You have wholesale accounts
• B2B portal matters
• You need EDI connections
• You are a larger operation

Choose Extensiv if:

• You are high-volume enterprise
• Complex fulfillment routing is needed
• You have operations team bandwidth
• Budget allows enterprise pricing

Choose Ordoro if:

• Shipping is the main pain
• Basic inventory tracking is sufficient
• You don't need forecasting

The Bottom Line

Multi-channel inventory management requires more than quantity sync. True multi-channel planning means:

• Unified visibility across all locations
• Combined forecasting for total demand
• Coordinated reordering that serves all channels
• Smart allocation when inventory is limited

For Shopify + Amazon sellers, ReplenishRadar delivers this in a focused, easy-to-implement package.

For sellers on many marketplaces, Sellbrite handles listing sync well.

For enterprise operations, Cin7 or Extensiv provide the depth needed for complex businesses.

Unify your multi-channel inventory. Start a free ReplenishRadar trial and see all your stock in one view.

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Related Reading:

• Multi-Channel Inventory Challenges
• Inventory Forecasting 101
• Multi-Channel Inventory Planning Solution