Inventory software is bought to stop two specific problems: selling something you do not have, and holding cash in stock that will not move. Everything else in this category is secondary to those two.
Which product fits depends less on features than on where you sell and what you sell. A single-channel retailer, a multi-channel ecommerce business and a manufacturer assembling products from components need genuinely different software.
Three Questions First
Do you sell on more than one channel? If you sell on your own site plus Amazon, eBay or in person, the core requirement is stock syncing across channels. Getting this wrong means overselling, which costs you money and marketplace standing.
Do you make things, or just resell them? Manufacturing needs bills of materials, work orders and component tracking. Reselling does not. This fork eliminates most of the list.
Where do the numbers need to end up? Inventory value feeds your accounts. If the software does not integrate cleanly with your accounting system, someone reconciles it manually every month.
The Twelve
1. Your ecommerce platform
Named first because it is frequently enough. Shopify, WooCommerce and Squarespace all track stock, decrement on sale and alert on low levels.
If you sell on one channel with a modest catalogue, you may not need dedicated software at all. Buy inventory software when you have a specific problem it solves, not in anticipation.
2. Cin7 Core (formerly DEAR Systems)
Rebranded after Cin7 acquired DEAR. Strong all-rounder covering multi-channel, warehousing, purchasing and light manufacturing, with good Xero and QuickBooks integration.
Suits: growing product businesses that have outgrown platform-native tracking.
3. Katana
Manufacturing-focused — bills of materials, production scheduling, raw material tracking and floor-level visibility.
Suits: businesses that make things. If you assemble products from components, this category exists for you and general inventory tools will not do.
4. Zoho Inventory
Strong value, multi-channel, with genuine integration across the Zoho suite including Books.
Suits: cost-sensitive businesses, existing Zoho users. Watch: order volume caps by tier.
5. inFlow Inventory
Well-regarded for straightforward stock control, purchasing and barcode scanning, with a desktop option.
Suits: warehouses and wholesalers wanting practical stock control without ecommerce complexity.
6. Sortly
Visual, simple, built around photographs and QR codes rather than SKUs and purchase orders.
Suits: asset and equipment tracking, service businesses tracking tools and parts. Not for ecommerce.
7. Unleashed
Strong on inventory valuation, batch and serial tracking, and multi-warehouse management, with good accounting integration.
Suits: wholesalers and distributors needing accurate stock valuation.
8. Fishbowl
Long established, particularly for QuickBooks users, with manufacturing and warehouse management.
Watch: historically desktop-led with an implementation cost. Confirm the current deployment model.
9. Linnworks
Multi-channel order and inventory management, strong in the UK, connecting many marketplaces with automated listing and stock sync.
Suits: sellers across several marketplaces where channel sync is the main problem.
10. Ordoro or ShipStation
Shipping-led with inventory attached. If your actual bottleneck is fulfilment — printing labels, comparing carrier rates, batch shipping — these solve that better than inventory tools do.
Suits: businesses whose pain is getting orders out, not knowing what is in stock.
11. Square for Retail
If you sell in person, Square’s POS and inventory share one system, with online integration.
Suits: shops and businesses selling in person and online.
12. Odoo Inventory
Open source and modular, covering inventory alongside accounting, CRM, manufacturing and ecommerce. Self-hostable.
Suits: businesses wanting one system across operations with technical capability. Watch: implementation is a project.
How They Compare
| Product | Multi-channel | Manufacturing | Barcode / POS | Best for |
|---|---|---|---|---|
| Platform-native | Single channel | No | Varies | Small catalogues, one channel |
| Cin7 Core | Yes | Light | Yes | Growing product businesses |
| Katana | Yes | Core strength | Yes | Manufacturers |
| Zoho Inventory | Yes | Basic | Yes | Value, Zoho users |
| inFlow | Limited | Light | Strong | Warehouses, wholesale |
| Sortly | No | No | QR-based | Assets and equipment |
| Unleashed | Yes | Light | Yes | Valuation, batch tracking |
| Linnworks | Core strength | No | Yes | Marketplace sellers |
| Ordoro / ShipStation | Yes | No | Shipping | Fulfilment bottlenecks |
| Square for Retail | Limited | No | Core strength | Physical shops |
| Odoo | Yes | Yes | Yes | Full business system |
Pricing typically scales by orders per month, SKU count or users, and changes regularly. Verify current limits — order volume caps are usually what you hit, not price.
The Accounting Connection Matters
Underrated, and it causes real problems when ignored.
Inventory is an asset on your balance sheet, and its value affects your cost of goods sold and therefore your profit and your tax. If your inventory system and your accounting system disagree, someone reconciles them manually, every month, forever.
Two things to check before choosing:
Does it integrate natively with your accounting software? Not “via Zapier” — natively, syncing stock value and cost of goods sold.
Which valuation method does it use? FIFO, average cost or specific identification produce different numbers, and your accountant may have a required approach. Some jurisdictions restrict which methods are acceptable.
Ask your accountant before choosing. This is the kind of decision that is cheap now and expensive at year end.
What Actually Prevents Overselling
The specific problem most multi-channel sellers buy for, so worth being concrete.
- Sync frequency. If stock syncs every fifteen minutes and you sell fast-moving items, you will oversell. Check the actual interval, not the marketing claim.
- Buffer stock. Holding back a small quantity per channel absorbs sync lag. Crude and effective.
- One source of truth. Decide which system owns stock levels. If two systems both think they are authoritative, they will disagree.
- Handling returns and cancellations. Stock coming back is where counts drift. Test this specifically during a trial.
Common Mistakes to Avoid
- Buying before you have the problem. Platform-native tracking is enough for many single-channel businesses.
- Not checking accounting integration. Manual reconciliation every month is a real ongoing cost.
- Ignoring valuation method. Ask your accountant; it affects your reported profit.
- Buying inventory software for a fulfilment problem. If the bottleneck is shipping, ShipStation or Ordoro solve that better.
- Not testing returns handling. Where stock counts drift in practice.
- Migrating without a stock count. Do a physical count at changeover. Importing wrong numbers means every report is wrong from day one.
- Ignoring order volume caps. The usual constraint, and a good month can push you into an upgrade.
- Assuming barcode scanning is included. Often a higher tier or requires specific hardware.
FAQs
Do I need inventory management software?
Not if you sell on one channel with a modest catalogue — your ecommerce platform tracks stock adequately. You need it when you sell across multiple channels, hold stock in multiple places, manufacture, or find yourself reconciling counts manually.
What is the best inventory software for a small business?
Cin7 Core or Zoho Inventory for multi-channel ecommerce, Katana if you manufacture, inFlow for straightforward warehouse stock control, Square for Retail if you sell in person.
How do I stop overselling across channels?
Choose one system as the source of truth, check the actual sync interval rather than the claim, and hold buffer stock per channel to absorb lag. Test returns handling too, since that is where counts drift.
Does inventory software integrate with accounting?
The good ones do, natively, syncing stock value and cost of goods sold. Verify native integration with your specific accounting system before buying — “connects via Zapier” is not the same thing.
What is a bill of materials?
A list of components and quantities needed to make one finished product. If you assemble products, you need software that handles this — Katana or Odoo — because general inventory tools cannot track component stock against production.
Should I do a stock count before switching?
Yes, a physical one, at changeover. Importing inaccurate opening quantities means every subsequent report is wrong and the error is difficult to trace later.
Key Takeaways
- Your ecommerce platform may already be enough for single-channel selling.
- Manufacturing needs bills of materials — that fork eliminates most general tools.
- Check native accounting integration and ask your accountant about valuation method.
- Sync interval and buffer stock are what actually prevent overselling.
- Do a physical stock count at changeover or every report will be wrong from day one.
Before You Choose
Write down how many channels you sell on and whether you make or resell. Those two answers eliminate most of this list, and if the answer is “one channel, reselling,” check whether your platform already covers you before buying anything.
For related decisions, see our guides to accounting software and Squarespace vs Shopify.