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Head-to-head · Inventory Optimization Software

ToolsGroup SO99+ vs 4R Systems Intelligent Inventory Optimization

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score ToolsGroup SO99+ #3 in Inventory Optimization Software 8.6/10 Pricing on request ✓ 6 of 6 features Visit ToolsGroup

ToolsGroup SO99+ leads on 0 checks, 4R Systems Intelligent Inventory Optimization on 0, and 6 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreToolsGroup SO99+ · 8.6/10

ToolsGroup SO99+ scores higher on our rubric for inventory optimization software: 8.6 against 7.2 out of 10; our editors rank them #3 and #16.

ToolsGroup SO99+ is the better fit for businesses with intermittent demand. 4R Systems Intelligent Inventory Optimization is the better fit for multi-echelon retail inventory planning.

  • ToolsGroup SO99+ fits best

    Businesses with intermittent demand

  • 4R Systems Intelligent Inventory Optimization fits best

    Multi-echelon retail inventory planning

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Side by side

Feature ToolsGroup SO99+ 8.6/10 Visit ↗ 4R Systems Intelligent Inventory Optimization 7.2/10 Visit ↗
At a glance
Editor score 8.6 7.2
Ranking #3 in Inventory Optimization Software #16 in Inventory Optimization Software
Best for Businesses with intermittent demand Multi-echelon retail inventory planning
Pricing model Paid Paid
Starting price Pricing on request Pricing on request
Free plan Not checked yet Not checked yet
Free trial — —
Deployment Cloud Cloud, Browser extension
Platforms Web Web
Support Tickets, Docs Email, Phone
Compliance SOC 2, ISO 27001, GDPR, SSO/SAML, 2FA GDPR
Built for Mid-market, Enterprise Mid-market, Enterprise
Features ToolsGroup SO99+ 6/6 · 4R Systems Intelligent Inventory Optimization 6/6
Multi-location optimization ✓ ✓
Safety stock optimization ✓ ✓
Service-level targets ✓ ✓
Replenishment recs ✓ ✓
Multi-echelon optimization ✓ ✓
Scenario planning ✓ ✓
Our review
Pros
  • Probabilistic forecasting addresses intermittent and long-tail demand
  • Optimizes targets, safety stock, reorder levels, and service levels
  • Supports multi-echelon planning, replenishment, and what-if scenarios
  • Machine-learning forecasting with SKU- and location-level recommendations
  • Multi-echelon replenishment across stores and distribution centers
  • Simulation, allocation, assortment, and markdown optimization
Cons
  • Pricing requires contacting sales
  • The SO99+ name is no longer presented as a standalone current product
  • Its broad planning scope may exceed simpler inventory needs
  • Pricing is handled through a sales-led process
  • Web is the listed platform
  • Implementation and ongoing customer-success services are part of delivery
Our verdict

ToolsGroup SO99+ was a service-driven supply chain planning and inventory optimization platform for manufacturers, distributors, retailers, and aftermarket organizations. It focused on businesses managing uncertain, intermittent, or…

Read the review →

4R Systems Intelligent Inventory Optimization is a cloud-based platform and planning service for retailers managing complex supply chains. It combines machine-learning demand forecasting with SKU- and location-level replenishment planning…

Read the review →
  1. ToolsGroup SO99+Inventory Optimization Software 8.6Pricing on request
  2. 4R Systems Intelligent Inventory OptimizationInventory Optimization Software 7.2Pricing on request

Strengths and trade-offs

  • ToolsGroup SO99+ — where it wins

    • Probabilistic forecasting addresses intermittent and long-tail demand
    • Optimizes targets, safety stock, reorder levels, and service levels
    • Supports multi-echelon planning, replenishment, and what-if scenarios

    Where it doesn't

    • Pricing requires contacting sales
    • The SO99+ name is no longer presented as a standalone current product
    • Its broad planning scope may exceed simpler inventory needs
  • 4R Systems Intelligent Inventory Optimization — where it wins

    • Machine-learning forecasting with SKU- and location-level recommendations
    • Multi-echelon replenishment across stores and distribution centers
    • Simulation, allocation, assortment, and markdown optimization

    Where it doesn't

    • Pricing is handled through a sales-led process
    • Web is the listed platform
    • Implementation and ongoing customer-success services are part of delivery
  • ToolsGroup SO99+8.6/10 · Pricing on request

    A broad, enterprise-focused optimizer for uncertain demand and multi-location inventory.

    Visit ToolsGroupFull verdict →
  • 4R Systems Intelligent Inventory Optimization7.2/10 · Pricing on request

    Deep multi-echelon planning for retailers managing complex inventory networks.

    Visit 4R SystemsFull verdict →

More comparisons

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update