Best inventory management software for e-commerce in 2026
Running out of stock on a bestseller and sitting on dead stock both cost money, and the gap between the two is usually a spreadsheet problem rather than a demand problem. Inventory management software syncs stock counts across every channel you sell on, flags reorder points before you run dry, and gives you one number for on-hand stock that you can actually trust instead of three different ones in three different tabs. This guide compares three platforms built for different stages of growth: a low-cost cloud tool for small stores, a mid-market system built specifically around multi-channel selling, and a UK-priced option for retailers who need tighter control across more than one warehouse.
For the wider picture on how inventory fits alongside your store platform, payments and shipping stack, see our e-commerce software buying guide, which covers the full category rather than one tool at a time.
Key takeaways
- Zoho Inventory is the cheapest way in Plans start at an affordable monthly rate with a genuine free tier for very small sellers, but the free plan’s 50-order monthly cap is easy to outgrow.
- Cin7 Core is built around multi-channel selling It connects sales orders, purchase orders and stock levels across several marketplaces at once, which is where spreadsheets usually fall apart first.
- inFlow Inventory publishes real UK pricing Plans are quoted in GBP as well as USD, so UK sellers get an actual published rate rather than a currency conversion.
Quick picks
Zoho Inventory
Zoho Inventory is a cloud-based stock and order management tool aimed at small and mid-sized online sellers, and it works best if you are already in, or willing to join, the wider Zoho ecosystem (Zoho Books for accounting, Zoho CRM for sales). It handles composite items, batch tracking and drop shipment on its free plan, which is more generous than most competitors offer at zero cost.
The pricing structure is where it gets interesting. Standard covers 500 orders, Premium steps up to 3,000, Plus to 7,500, and Enterprise to 15,000 orders, with the price rising at each tier, all billed annually and all in USD on Zoho's own pricing page (a currency selector lets you view GBP, EUR and others, but the published list prices are USD). If you go over your order allowance mid-month you either upgrade or pay for an orders add-on priced per 500-order block, which adds up faster than it sounds for a seasonal spike.
Where it genuinely helps e-commerce sellers is multi-warehouse tracking and serial or batch number support without needing the top tier, and its integrations with Shopify, Amazon, eBay and Etsy are solid rather than flashy. The interface looks dated next to newer tools, and reporting is functional rather than insightful, but for a store doing a few hundred orders a month that just needs stock levels to stop lying to it, Zoho Inventory does the job without a steep learning curve or a five-figure annual bill.
Cin7 Core
Cin7 Core, formerly known as DEAR Systems, is inventory and order management software built around businesses that sell the same products across several channels at once, whether that is a Shopify store, an Amazon seller account, a wholesale B2B portal and a physical shop. It handles manufacturing and bill-of-materials features too, so it suits sellers who assemble or kit products, not just resellers.
Official pricing for Standard (5 users, 6,000 sales orders a year, 2 integrations) steps up through Pro to Advanced at the top, all quoted in USD only with no published GBP figure. That is a meaningful jump from Zoho, and it puts Cin7 Core out of reach for very small stores, but the pricing reflects what you get: automated purchase order suggestions based on sales velocity, landed cost tracking, and integration depth with platforms like Shopify, WooCommerce, Amazon and Xero that goes beyond basic stock syncing into actual workflow automation.
The honest trade-off is setup time. Cin7 Core is not a same-afternoon implementation the way Zoho Inventory can be, and getting the automation rules configured properly for your specific channel mix usually takes a few weeks of trial and error. For a business already doing enough volume to feel the pain of manual stock reconciliation across channels, that setup cost pays for itself; for a single-channel store under a few hundred orders a month, it is more tool than you need.
inFlow Inventory
inFlow Inventory is desktop-and-cloud inventory software originally built for wholesalers and small manufacturers, and it has since added enough e-commerce integrations (Shopify, Amazon, WooCommerce, QuickBooks Online) to work as a stock backbone for online sellers who also do B2B or showroom sales.
What sets it apart in this comparison is that inFlow publishes an actual GBP price list rather than only USD, with the four tiers, Entrepreneur, Small Business, Mid-Size and Enterprise, stepping up in cost, all billed monthly (annual billing brings the effective monthly rate down by roughly 20 percent). Team members, extra integrations and API access are separate add-ons on every tier, which is worth factoring in before you commit, since a five-person team on the Entrepreneur plan will need the team members add-on, priced per extra seat.
The practical strength here is barcode-driven warehouse management and a genuinely usable mobile scanning app, which matters more than most software comparisons give it credit for once you are picking and packing physical stock rather than just watching numbers on a dashboard. The limitation is that inFlow's e-commerce automation is thinner than Cin7 Core's; it syncs stock reliably but does less to automate purchasing decisions. For a UK-based seller who wants a straight, non-converted price and solid warehouse tools, it is the more transparent of the three.
|
Best value
Zoho Inventory
|
Best for multi-channel selling
Cin7 Core
|
Best UK pricing
inFlow Inventory
|
|
|---|---|---|---|
| Order volume on entry plan | 500 orders/month | 6,000 orders/year | Not order-capped |
| Multi-warehouse support | Yes | Yes | Yes |
| Manufacturing / kitting | No | Yes | No |
| Published GBP pricing | No | No | Yes |
| Best for | Small stores on a tight budget | Sellers running several channels at once | UK sellers wanting warehouse tools and a real GBP price |
| Check Price | Check Price | Check Price |
How to choose inventory management software
Most cloud inventory tools price by monthly order count, not revenue, so a seasonal spike can push you into a higher tier or trigger add-on charges overnight.
If you sell on more than one channel, stock has to update everywhere the moment an order comes in, or you will oversell.
Businesses holding stock in more than one place, including a home office and a 3PL, need location-level stock counts, not just one combined total.
Inventory software that does not talk to your accounting system creates a second set of books you have to reconcile by hand.
The point of the software is to tell you what to reorder and when, not just to record what you already have.
Frequently asked questions
Is there a genuinely free inventory management tool for a small store?
Zoho Inventory has a real free plan covering 50 orders a month, one user and two locations, with no time limit. It suits a very small or pre-launch store, but most stores outgrow the 50-order cap within a month or two of steady sales.
Does inventory software replace accounting software?
No. Inventory platforms track stock, purchase orders and sales orders, but they are not a substitute for double-entry accounting. Zoho Inventory pairs with Zoho Books, Cin7 Core integrates with Xero and QuickBooks, and inFlow integrates with QuickBooks Online, but you still need a separate accounting system.
Can one system manage stock across Shopify, Amazon and eBay at the same time?
Yes, all three tools here support syncing stock across those channels, though the depth of automation differs. Cin7 Core does the most to automate purchasing decisions based on combined multi-channel sales data; Zoho Inventory and inFlow keep stock levels accurate but leave more of the purchasing decision to you.
What happens if I go over my plan's order limit?
On Zoho Inventory you can buy additional orders in blocks of 500 for a small added monthly fee, or upgrade tiers. Cin7 Core and inFlow charge for extra capacity or require a plan upgrade rather than metering per order, so check the specific overage terms before a high-volume month rather than after.
Final verdict
- Zoho Inventory: cheapest entry point, real free plan, USD pricing only
- Cin7 Core: strongest multi-channel automation, no free plan, USD only
- inFlow Inventory: published GBP pricing, strong warehouse tools, less purchasing automation
For most online sellers, the order volume you actually process each month decides this more than any feature list. Under a few hundred orders, Zoho Inventory’s low entry price and real free plan make it the sensible starting point. Once you are running the same catalogue across three or four channels and manual reconciliation is eating hours every week, Cin7 Core’s automation earns its higher price. If you are UK-based and want a quoted GBP price with strong warehouse and barcode tools, inFlow is the more transparent choice of the three.
