Stockpyl

At a glance

• Editor score
  6.4 / 10
• Pricing
  Open source
• Best for
  Developers modeling complex inventory networks
• Free plan
  No
• Paid from
  Free
• Facts checked
  21 Sep 2026

• Where it wins

  • Covers EOQ, newsvendor, Wagner-Whitin, and safety-stock models
  • Supports serial, tree, and arbitrary-topology multi-echelon networks
  • Adds simulation for products, BOMs, disruptions, policies, and cost functions

• Where it doesn't

  • Requires Python development and self-hosted deployment
  • Does not provide a packaged replenishment workflow
  • Integration and service-level capabilities are limited

Our verdict on Stockpyl

Stockpyl is an open-source Python package for inventory optimization and supply-chain simulation. It is aimed at researchers, analysts, and developers who need to model inventory systems directly in code. The scope covers classical single-node methods, including economic order quantity, newsvendor, and Wagner-Whitin models, alongside safety-stock and base-stock calculations. For teams building custom analytical tools rather than selecting a hosted application, its Python distribution and self-hosted platform fit a technical workflow.

Its strongest area is model depth. Stockpyl supports serial multi-echelon optimization under the stochastic-service model, serial and tree networks under the guaranteed-service model, and arbitrary-topology networks using enumeration or coordinate descent. It also supports single- and multi-echelon simulation, multiple products, bill-of-materials structures, stochastic demand, and supply disruptions. Built-in or custom inventory policies and cost functions give developers room to represent specialized operating assumptions instead of limiting analysis to a fixed replenishment template.

The trade-off is that this flexibility comes with implementation responsibility. Stockpyl is a Python package, not a hosted commercial application, so it suits teams prepared to manage code and deployment. It is less suitable for buyers looking for packaged replenishment workflows, verified integrations, or service-level features designed for operational users. Choose Stockpyl when the priority is technical control over complex inventory-network models and simulations. Choose an alternative when the priority is a ready-to-run application with broader business-system connectivity and guided replenishment operations.

Your product? Our editors can test Stockpyl in depth and publish a review, labelled as paid · from $149/mo →

Stockpyl pricing

Stockpyl fact sheet

Alternatives to Stockpyl

• PTC Servigistics Advanced Inventory OptimizationA specialized platform for optimizing service-parts stock across complex supply chains.9.2
• Slimstock Slim4ERP-connected forecasting and replenishment for complex, multi-location inventory networks.8.7
• ToolsGroup SO99+A broad, enterprise-focused optimizer for uncertain demand and multi-location inventory.8.6

See all Stockpyl alternatives →

Featured on iTechGuides

Stockpyl is listed in our Inventory Optimization Software directory. Add the badge to your site — it links back to this page.

<a href="https://www.itechguides.com/products/stockpyl/"><img src="https://www.itechguides.com/best/badge/stockpyl.svg" alt="Featured on iTechGuides" width="230" height="46"></a>

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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.

Last updated 7 Oct 2026 · How we research and update