Head-to-head · Inventory Optimization Software
ToolsGroup SO99+ vs 4R Systems Intelligent Inventory Optimization
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
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
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 |
|
|
| Cons |
|
|
| 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 → |
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
- PTC Servigistics Advanced Inventory Optimization vs ToolsGroup SO99+
- Slimstock Slim4 vs ToolsGroup SO99+
- ToolsGroup SO99+ vs Manhattan Active Inventory Replenishment
- ToolsGroup SO99+ vs Lokad
- ToolsGroup SO99+ vs Netstock Inventory Optimization
- ToolsGroup SO99+ vs GAINS
- ToolsGroup SO99+ vs Blue Yonder Demand and Supply Planning
All inventory optimization software comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update






