Warehouse programs are the software a business uses to run a warehouse: tracking stock, directing people to pick and pack, booking carriers and charging customers. The term covers everything from a shared spreadsheet to a cloud warehouse management system. Some people search “warehouse programs” meaning staff training or incentive schemes, but this guide is about software. It explains the main types, what each one does, how they connect, and how to work out which ones your operation actually needs.
What are warehouse programs?
Warehouse programs are the computer programs that record what stock a warehouse holds, where it sits, and what happens to it between goods-in and despatch. Most warehouses run more than one. A typical set-up has an ERP or accounts package holding products and customers, a warehouse management system directing the floor, and shipping software printing labels and talking to carriers.
“Warehouse management system” is one specific type of warehouse program. “Warehouse programs” is the wider family, which also includes inventory and stock control software, warehouse control and execution systems for automated sites, ERP warehouse modules, transport and shipping software, 3PL billing tools and the handheld scanning apps that operatives carry.
Types of warehouse programs businesses actually need
No single program does every job well, so the useful question is which jobs your warehouse has and which program owns each one. Getting this wrong leaves gaps that staff fill with spreadsheets, or overlapping tools that disagree with each other about stock.
Spreadsheets: the starting point
Plenty of small warehouses start with Excel or Google Sheets holding stock levels, location codes and customer orders. Spreadsheets are free, flexible and familiar, which is why they hang on. The problems show up as volume grows: the file depends on whoever maintains it, two people editing at once creates two versions of the truth, and a broken formula can sit unnoticed for weeks. Once you are reconciling the spreadsheet against a physical count every week, it has stopped saving you time.
Inventory management and stock control programs
Inventory programs focus on quantities: what you have, roughly where it is and when to reorder. They usually handle purchase orders and reorder points well. What they don’t do is run the physical work. An inventory program knows there are 200 units of a product in location A1, but it doesn’t send a picker to A1, ask them to scan the location and the product, and stop them if they pick the wrong one. For a distributor with simple receiving and despatch, that can be enough. For anyone picking hundreds of order lines a day, it usually isn’t.
Warehouse management systems (WMS)
A warehouse management system is software built to control day-to-day warehouse operations. TechTarget’s definition covers the core: receiving, putaway, picking, packing, shipping and the stock records behind them. In practice a WMS directs each task on a handheld scanner, validates every scan against the expected product and location, and keeps a full audit trail of who moved what and when.
WMS products range from cloud systems priced for small and mid-sized operations to enterprise platforms built for large automated networks. Clarus publishes its own pricing: plans start from £1,000 a month base, with tiered user licensing and a one-off implementation fee added in the final quote. If you’re comparing vendors, our guide to the best warehouse management software goes through the options by type of operation.
Warehouse control systems (WCS)
A warehouse control system sits between the WMS and the machines. If a site has conveyors, sorters, shuttles or robots, the WCS tells each piece of equipment what to do and in what order. The WMS decides that an order should go to a particular packing zone; the WCS works out how the conveyor gets it there. A warehouse with no automation doesn’t need a WCS, because the WMS talks directly to people with handheld scanners.
Warehouse execution systems (WES)
A warehouse execution system decides the sequence of work in real time, balancing people and machines. It’s most common in large, heavily automated distribution centres where the order in which totes reach a pick station affects throughput. Some vendors sell WES as a separate layer; others build parts of it into the WMS or WCS. Most manual and semi-manual warehouses never need a standalone WES. What they do need is a WMS that can prioritise picking sensibly, for example by the time each carrier arrives to collect.
ERP warehouse modules
ERP platforms such as NetSuite, SAP and Microsoft Dynamics include warehouse functions alongside accounting, purchasing and sales. For a single-company warehouse with simple flows, the ERP module may be enough. The usual pinch points are scan-verified picking at every step, detailed batch and expiry control, and anything multi-client, where a third-party warehouse holds stock for several customers and bills each one differently. Our ERP vs WMS comparison covers where the line usually falls.
Transport and shipping programs
Shipping software books carriers, prints labels and manifests, and tracks deliveries. A transport management system (TMS) goes further, planning routes, loads and vehicles for businesses that run their own fleet. Both need live data from the warehouse: which orders are packed, what they weigh and when they need to leave. Clarus connects directly to the major parcel and pallet carriers, including Royal Mail, DHL and Evri, and integrates with transport systems such as Qargo TMS. There’s more on choosing this layer in our guide to shipping management software.
3PL billing and client portal programs
Third-party logistics (3PL) warehouses have a job most warehouses don’t: charging several customers for storage, handling and extra services, each on their own rates. Many 3PLs still do this by exporting activity from the WMS into a spreadsheet at month end and building invoices by hand, which is slow and is where missed charges slip through. Billing that sits inside the WMS works from the same records as the operation. In Clarus that’s the client billing feature, and St John’s Hall Storage cut its invoicing time by 90% after moving to it. A client portal sits alongside, so each customer can see its own stock and orders without emailing the warehouse.
Barcode and handheld scanning apps
Scanning is how a warehouse program knows what really happened on the floor. Operatives use handheld terminals to scan locations, products and pallets at each step, and the barcodes themselves usually follow GS1 standards, so labels from suppliers and customers can be read without re-labelling. In Clarus, barcode scanning runs through configurable handheld workflows, so the extra checks a product needs, such as batch or expiry capture, appear on the screens where they’re needed. What matters most is that the handheld app writes straight back to the WMS, so a mis-scan is caught at the shelf, not at the packing bench.
How warehouse programs fit together
A small distributor might run an accounts package, an inventory program and a shipping tool. A mid-sized 3PL typically runs a WMS with billing and a client portal, plus integrations to each client’s ecommerce platform, such as Shopify, and to carriers. A large automated site adds a WCS and possibly a WES. In every case, the question that matters is which program owns which data, and how quickly the others hear about changes.
The cleanest pattern is an API connection, where systems exchange orders, stock and confirmations directly. Where a system has no API, file-based interfaces still work. Mathew Buttar, Head of Solutions at Clarus, put the difference plainly: “if you can get a API integration with an ERP system, you know, that API is pretty much instantaneous… If it’s an ERP that doesn’t have an API integration, we can do it via interface files where we can map those files that come in.” Middleware tools can map data between systems too, but every extra hop is another place for a field mapping to break.
Before connecting anything, it helps to answer the same questions Clarus asks at the start of an integration: “What do you want to send us? What can you send us? What do you want to do with it when it gets here? How do you want to process it? And then once we process it, what do you want to see back?”
Are there free warehouse programs?
Yes. Open-source projects such as myWMS, OpenWMS.org and the stock modules in Dolibarr can be downloaded for free, but you pay in set-up time, hosting and support. Cleverence keeps a list of free and open-source warehouse software that’s a useful starting point. Free tools can suit a single small site with simple flows. They rarely suit a 3PL, because multi-client billing, client portals and carrier integrations are the parts free tools tend to leave out.
Five steps to buying warehouse software
Buying guides such as Software Advice’s WMS comparison describe a similar process. Here’s how it looks from the warehouse side.
1. Define your needs and goals
Start with what hurts. Is it picking errors, stock you can’t find, slow month-end billing, or carrier booking done by hand? Then look ahead: if you plan to add clients, sites or sales channels, the software has to cope with that. Talk to the people who will use it every day, plus finance and whoever looks after customers.
2. Build a shortlist
Directories such as Capterra’s warehouse management software listings let you filter by features, company size and deployment. Filter hard on the two or three requirements that would rule a product out, such as multi-client billing for a 3PL or batch and expiry control for food.
3. Compare products on what matters
Compare total cost (subscription, users, implementation and support), how pricing is published, which integrations exist already, where data is hosted, and how support works. Read reviews for patterns rather than single comments. Ask every vendor for a written implementation plan and a reference customer in a similar line of business.
4. Negotiate contract terms
Price isn’t the only term. Check the contract length, what’s included in implementation, how integrations are charged, what support response times are committed to, and how you get your data back if you leave.
5. Plan implementation and data migration
The software is half the job. The rest is clean product and location data, trained users and a tested go-live. At Clarus, a standard project with the right support on both sides aims to go live within 12 weeks. As Mathew Buttar puts it: “12 weeks is a good standard because you need to allow people time.” Complex, multi-client or heavily integrated projects take longer. Pick super users early, test every process before go-live, and get each one signed off.
What to ask in a vendor demo
Reviews tell you what existing customers think, but a demo is where you test the product against your own operation. Questions worth asking:
- Show me a pick where two orders for the same product have different batch or expiry requirements. Can I set that up myself, or does it need development?
- If one carrier collects at 2pm and another at 4pm, how do I pick the 2pm orders first?
- If a client’s integration fails overnight, how do I find out, and what happens to the orders?
- Show me the audit trail for one pallet. Who moved it, when, and from where? Can I export it for a customer query?
- How do billing charges get from warehouse activity onto an invoice, and what can I check before it goes out?
Onboarding, integration and data migration
Implementation is where the hidden cost sits. Budget time for cleaning product data (dimensions, barcodes, units of measure), mapping locations, building and testing integrations, and training. Training is the item most often squeezed, and it shows after go-live when staff fall back on old habits. A good vendor gives you templates for product and location data and walks each process through with your team before you switch over.
Related software: inventory, shipping and ERP
A warehouse program rarely works alone. If you’re new to the category, start with what a warehouse management system is, then decide where the line sits between your ERP and your WMS. Third-party warehouses have their own requirements on top of the core WMS, which our guide to 3PL software covers in detail, and the WMS cost guide breaks down what you’ll actually pay for.
Speak to a warehouse expert
If you’re working out which warehouse programs your operation needs, Clarus is worth a conversation. We work with 3PLs, wholesalers and distributors across the UK and Europe.
Get in touch with our team to talk through your requirements.
How we put this guide together
Definitions of WMS, WCS and WES draw on the Wikipedia and TechTarget entries linked above. The buying process reflects the published guidance from Software Advice and Capterra. Clarus pricing is taken from the published Clarus pricing page, and the implementation and integration quotes come from interviews with Mathew Buttar, Head of Solutions at Clarus. We don’t publish prices or implementation times for other vendors, because most don’t publish them.