Buyer's Guide 2026

The best inventory management software, honestly

Most best-of lists are written by directories that earn a fee when you click. This one is written by a software vendor, and we say so upfront. The trade is simple: we tell you honestly which tools are right for which job, including when the answer is not us.

Start with the job, not the brand

Inventory management software is three different products wearing one name. Buy the wrong kind and it will do its job perfectly while your actual problem carries on costing you money.

Trackers count stock. Stock control platforms run the operation: sales orders, purchase orders, warehouses, invoicing. Optimisation software decides what to buy, when, and for how much. We wrote a fuller breakdown of the three kinds in our stock management software guide. This page ranks the strongest option for each job, based on what each tool is actually built to do.

The shortlist, by job

Best for simple stock tracking: Sortly, or your accounting package

If the question is what have we got and where is it, a visual tracker like Sortly answers it for less than £50 a month. Xero and Sage both include basic tracked inventory in plans you may already pay for. There is no shame in this tier. The mistake is expecting it to tell you what to buy next quarter. It cannot, and it does not claim to.

Best for running operations: Unleashed or Cin7

Wholesalers and product businesses that have outgrown spreadsheets for order processing tend to land on Unleashed or Cin7 Core. Both are strong operational systems: multi-warehouse stock, purchase and sales orders, batch tracking, landed costs, B2B portals. Expect roughly £200 to £700 a month depending on users and order volume. Their planning side is thinner: reorder points and basic forecasting, one method per product, no view of what a constrained budget should buy first.

Best for enterprise planning budgets: Netstock or Slim4

Netstock and Slimstock's Slim4 are serious demand planning platforms with big installed bases. If you have a planning team and a four-figure monthly budget, they deserve a look. Neither publishes pricing, both are quote-only, and in our testing of the category neither shows you why an individual forecast was chosen or lets you plan purchasing from a fixed budget down. We compare them line by line on our Netstock pricing page.

Best for deciding what to buy: Optimal Chain

This is us, so judge the claims, not the adjectives. Optimal Chain is a decision layer, not an operations platform. It takes a spreadsheet export from whatever you run today and answers the three questions the tools above leave open: what will each product actually sell, what should we buy with the budget we have, and what happens if a supplier lets us down. Here is what that looks like on a live demo catalogue:

Three things in that screen do not exist in the rest of this list. The forecast scoreboard: 18 methods compete per product and you see the blind-test scores, so when a sceptical FD asks why trust this number, the answer is on screen. The budget slider: type what you can actually spend and the plan allocates it to the penny, most urgent revenue first, every supplier minimum respected. And behind them, a buffer stock calculation built from each product's real forecast errors rather than a 1965 textbook formula. The engine has been tested on a live 50,000-SKU catalogue.

Side by side, with the caveats left in

Capability Trackers (Sortly, Xero) Operations (Unleashed, Cin7) Planning suites (Netstock, Slim4) Optimal Chain
Counts stock, runs orders Counting only Yes, their core strength Partial No. Works alongside yours
Forecasting None Basic, one method Yes, method hidden 18 methods per product, scores shown
Plans to a fixed budget No No No To the penny, MOQ-aware, instant
Supplier delay stress-test No No Rare, enterprise tier £ damage + adjusted POs in ~1 min
Deal and break-even analysis No No No Walk-away price to 4 decimal places
Pricing £20–50/mo £200–700/mo Quote-only, often £1k+/mo From £199/mo, list published

Read the first row again, because it is the honest heart of this page. If you need barcode scanning, order processing or a B2B portal, buy Unleashed or Cin7 and be happy. Optimal Chain does none of that. What it does is the layer they stop at: the buying decisions. Plenty of businesses run both.

How to choose in ten minutes

Ask one question: what was the most expensive stock mistake we made in the last year? If the answer is we lost track of things, buy a tracker. If the answer is orders and paperwork drown us, buy an operations platform. If the answer is we ran out of best sellers, or the money is asleep in stock that does not move, or the budget never covers what the reorder report demands, that is a planning failure, and no amount of tracking fixes it.

The fastest way to test the planning layer is not a demo with a sales team, because we do not have one. Send a sales export from whatever system you run and get a free blueprint of your own catalogue: a forecast for every product, the stock risks ranked, and the £ figure sitting in dead and excess stock. If the numbers are not interesting, you have lost nothing but the export.

Frequently asked questions

What is the best inventory management software for a small UK business?

For a small catalogue where the job is knowing what you have, a tracker such as Sortly or the stock module in Xero or Sage is usually enough, and cheap. The step up is worth taking when stock decisions start costing real money: repeated stockouts, cash tied up in slow lines, or a purchasing budget that never stretches. That is a planning problem, not a counting problem.

What is the difference between inventory tracking, stock control and inventory optimisation?

Tracking software counts what you have. Stock control platforms such as Unleashed or Cin7 run the operation: orders, warehouses, invoicing. Optimisation software decides what to buy, when, and for how much. The three do different jobs and many businesses run a tracker or control platform alongside an optimisation layer.

Is Optimal Chain a replacement for my current inventory system?

No. Optimal Chain is the decision layer that sits on top. It does not do barcode scanning, point of sale or order processing. It takes a spreadsheet export from whatever system you run, forecasts every product with a tournament of 18 methods, and plans your purchasing to a fixed budget with every supplier minimum respected.

How much does inventory management software cost in the UK?

Trackers start around £20 to £50 per month. Stock control platforms typically run £200 to £700 per month. Planning suites such as Netstock or Slim4 are quote-only and commonly reach four figures monthly. Optimal Chain publishes its full price list, from £199 per month with every capability on every plan and no per-seat fees.

Skip the shortlist. See your own numbers.

Send a sales export from whatever system you run and get a free blueprint of your own catalogue: a forecast for every product, the stock risks ranked, and the £ figure sitting in dead and excess stock. No card, no sales calls.

Get Your Free Blueprint
✉️ Contact Us