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Whitespace vs Netstock: AI that runs replenishment for you, or software your planners run

Alex Tung and Leon Yao
·5 min read

Whitespace gives wholesalers and distributors AI that runs inventory replenishment and does other work. Netstock is established inventory planning software, a tool your planners use to forecast demand, set stock levels and review suggested orders. Whitespace gives you an autonomous AI agent. It builds the orders, and your buyer approves them. Which fits depends on your team.

Effective inventory replenishment is one of the most important challenges for a distributor

Stock is usually the largest item on a distributor's balance sheet. Buy too much and cash sits on the shelf. Buy too little and the customer orders from a competitor. Most teams make that call SKU by SKU, in a spreadsheet or their ERP's reorder report.

Netstock is proven planning software for your planners

Netstock has served distributors since 2009 and lists more than 2,500 customers. It does several things well:

  • Stock policy. It classifies SKUs and sets safety stock by service level.
  • Forecasting. It picks a forecast model for each SKU and removes outliers.
  • Ordering. Its suggested orders respect MOQs and lead times, and approved POs go back into your ERP.
  • Visibility. Its planning dashboards and reports are mature, and it publishes its pricing.
  • AI features. Since 2025 it has added AI explainers and email agents that draft messages to suppliers.

Your planners run the tool and adjust its suggestions for what it can't see.

Whitespace gives you an AI agent that runs replenishment

Whitespace solves the problem with state-of-the-art AI capabilities. It connects to your ERP, spreadsheets and email, and learns how your business runs: your customers, your suppliers and your buyer's rules. AI agents then build the replenishment order, and your buyer reviews each line with its reason and approves the PO into the ERP.

  • Better demand forecasts. Whitespace reads your full sales history, removes one-off orders, and factors in your customers and signals such as weather.
  • Automated replenishment orders. It builds each order around MOQs, supplier lead times, allocated stock and volume discounts, and gives a reason on every line.
  • Improvements after each cycle. It learns from every change your buyer makes, so each order needs fewer edits than the last.
How Whitespace works: connect your systems, the brain maps your business, agents do the work, your buyer approves, and Whitespace learns from every change. 1 · CONNECT Your systems ERP: Sage, Acumatica, NetSuite, SAP and more Spreadsheets Email 2 · THE BRAIN Learns your firm Maps and cleans your data Learns customers, suppliers and rules Adds weather and signals 3 · AGENTS Do the work Build reorders Draft email replies Check supplier POs Answer any question 4 · YOUR BUYER Approves Reviews each line with its reason Approves the PO into the ERP Learns from every change your buyer makes

How Whitespace and Netstock compare

Side by side, through one replenishment cycle (Netstock as of October 2026):

StepNetstockWhitespace
1. Get startedAn implementation project, typically 6 to 10 weeksAI agents do the setup, typically in under a week
2. Forecast demandA forecast model per SKU, outliers removed, safety stock by service levelFull sales history, one-off orders removed, plus customer context and weather
3. Handle the exceptionsPlanners review the suggestions and adjust themAI agents adjust the lines and explain why; the buyer reviews them
4. Build the orderSuggested orders within MOQs and lead times, written back to the ERPFull POs within MOQs, lead times and the buyer's rules, written back to the ERP
5. Next cyclePlanners tune settings such as service levelsAI agents learn from the buyer's changes

When Netstock is the better choice:

  • Your planners want to run the tool and set the parameters themselves.
  • You want mature planning dashboards and reports.
  • You want a classic planning approach, with SKUs classified and safety stock set by service level.

When Whitespace is the better choice:

  • Your buyers spend much of their week on exceptions such as credit holds, order notes and one-off orders.
  • You want the orders built for you, with a reason on every line, and your buyer approving them.
  • You want to go live in under a week, with very little work from your team.

Case study: why an industrial distributor chose Whitespace over Netstock

An industrial distributor with around 20,000 SKUs on Acumatica ran purchasing through an Excel tool that one buyer maintained by hand, about twice a week. The tool worked, but the workload did not scale as the business grew, and inventory turns and service levels had significant room for improvement. The owner's goal:

"The right stuff on the shelf at the right time without blowing up working capital."

Owner

They had looked at Netstock before and stayed with their spreadsheet.

This time they chose Whitespace, because it handles the nuances of their business and it learns. Those nuances include edge cases, bills of materials and assembly kits, multiple locations and complex MOQ logic.

Whitespace connected to Acumatica and the buyer's spreadsheet and learned how they buy. Two examples: it shows only what needs ordering this cycle, and when a PO falls short of a supplier's minimum, it follows the buyer's rule of topping up with items that will sell before trying another vendor.

They went live within the week. On the latest run, the buyer accepted more than 90% of its purchase orders as they were.

"All the replenishment is now done with Whitespace. For me especially, the performance and efficiency is huge."

Purchasing lead

Frequently asked questions

Is Whitespace a good alternative to Netstock?

Whitespace suits distributors who want AI to do the replenishment work, exceptions included, with their buyer having oversight. Teams that want planning software to operate themselves may prefer Netstock.

How much work is it to switch to Whitespace?

Very little. Most customers go live in less than a week. AI agents map and clean your data, and your team walks us through how you buy once.

Does my buyer stay in control?

Yes. Your buyer can review every line with its reason and approve the PO before it goes into your ERP.

Which ERPs does Whitespace work with?

SAP, Oracle NetSuite, Epicor, Infor, Microsoft Dynamics 365, Sage, QuickBooks and Acumatica.

See your potential uplift

Book a 30-minute call at cal.com/atung/30min, or ask for an inventory diagnostic: we connect to your ERP and show overstock, stock-out risk, cash tied up and your potential uplift. Or try the ROI calculator.

Sources, checked 24 October 2026: Netstock pricing · Netstock AI · Netstock NetSuite guide · Netstock about

Alex Tung
Co-founder and CEO
LinkedIn
Leon Yao
Co-founder and CTO
LinkedIn