Platforms
Kassa sells. Kompass runs everything behind it
Most of what we build starts from one of two frameworks we built and run ourselves. Kassa is the selling side: online stores, the sales desk, the counter and payments. Kompass is the back office: orders, the warehouse, products and stock. Both are modular, so each business gets its own shape, not one size for all.
Platform, not package
What stays the same, and what we shape.
The parts every business needs to be right are the same everywhere, and proven daily. The parts that make a business its own are built for it.
The same for everyone
- The stock ledger, by batch, best-before and bin, never edited
- Picking oldest batch first, with barcode checks
- One catalogue, one customer list and one checkout
- Orders, companies, account pricing and quotes
- Roles and permissions, per area of the business
- Hosting, backups, updates and security
Shaped for each business
- The screens, the steps and what each person sees
- Documents in your branding, in your customers' languages
- Which modules are switched on, and which are built new
- Connections to your accounting, couriers, payment provider and channels
- Reports and exports in the shape you work in
- The hardware on the floor and at the counter
Built from the same frameworks
Three businesses that look nothing alike.
The same two frameworks, with different modules switched on and different parts built for each. One is running today; two are the shapes we are asked for most.
In production
Food and drink wholesaler
A wholesaler in Sweden
Kassa
Not used here
Kompass
- Its own trade store and every order
- Batch-tracked warehouse with FEFO picking
- Purchasing, and accounts in Spiris
Built for them
- Deposit lines on every order
- Screens on the warehouse wall
A typical shape
Trade counter beside a warehouse
A merchant or wholesaler with walk-in trade
Kassa
- A till at the counter with a card terminal
- Account customers paying on account
Kompass
- Stock and picking for deliveries
- Goods in and purchasing
Built for them
- Order online, collect and pay at the counter
- Delivery slots for the van
A typical shape
Specialist online brand
Made-to-order or configurable products
Kassa
- An online store with card payments
- A sales desk for trade enquiries
Kompass
- Products and content for the store and marketplaces
- Pick, pack and dispatch
Built for them
- Options priced as the customer chooses them
- Made-to-order lines that skip stock
Where they are used
Not one size for all.
What we build, and which framework it starts from. Some of it starts from neither, and that is fine too.
- Warehouse management
Starts from Kompass
Kompass is the warehouse.
- Order management
Starts from Kompass
Every order lands in Kompass.
- Wholesale B2B ecommerce
Starts from Kompass and Kassa
Kassa sells online at account prices, Kompass fulfils.
- ERP
Starts from Kompass
Purchasing in Kompass, accounts in your accounting software.
- Business management software
Starts from neither
Built for the job, from our own parts.
- Employee management software
Starts from neither
Built for the job, from our own parts.
- Specialised B2C ecommerce
Starts from Kassa
A Kassa online store, shaped around made-to-order products.
- All-in-one platforms
Starts from Kompass and Kassa
Store, warehouse, orders and a counter, as one.
| Solution | Kompass | Kassa | How |
|---|---|---|---|
| Warehouse management | Yes | No | Kompass is the warehouse. |
| Order management | Yes | No | Every order lands in Kompass. |
| Wholesale B2B ecommerce | Yes | Yes | Kassa sells online at account prices, Kompass fulfils. |
| ERP | Yes | No | Purchasing in Kompass, accounts in your accounting software. |
| Business management software | No | No | Built for the job, from our own parts. |
| Employee management software | No | No | Built for the job, from our own parts. |
| Specialised B2C ecommerce | No | Yes | A Kassa online store, shaped around made-to-order products. |
| All-in-one platforms | Yes | Yes | Store, warehouse, orders and a counter, as one. |
Better together
One shelf, every counter.
Kassa sells online and over the counter, Kompass receives and picks, and every sale comes off the same shelf, in the same ledger, picked from the same batch. Try it.
On the shelf, as this screen sees it
137cases
On the shelf, as this screen sees it
137cases
On the shelf, as this screen sees it
137cases
The stock ledger, in Kompass
Still water 24×500ml
DRK-WATER-24 · Bin B-03-1 · Batch L2608 · Best before 30/06/2027
137
cases on the shelf
- 10:41CounterSold at the trade counter · Jess, till 1−2
- 10:05OnlineOrdered online, picked for The Corner Deli · Sam, iPad 2−12
- 08:30Goods inReceived on PO-1039 · Ali, dock+48
Try the buttons. Kassa sells, Kompass receives and picks, and every door writes to the same ledger. Nothing to reconcile at the end of the day.
Service
Features are easy to copy now. Service is not.
Software is quicker to build than ever, so what sets a system apart is who stands behind it. Every Stackslim system comes with a named service manager, IT support around the clock, and changes whenever your business needs them, all inside one flat monthly fee.
A service manager who knows you
One named person who learns how your business works, from the first call to years after launch. You never start again with someone new, and you never explain your setup twice.
IT support, 24/7, included
Day or night, weekday or weekend, someone answers. Support is part of the monthly fee, never a bolt-on, an hourly rate or a ticket queue.
Shaped before you start, changed whenever you like
Tell us what you need before launch and we build it in. Change your mind later and we add, change or take things away, as part of the same fee.
No hidden fees, ever
No payment fees from us, no per-order, per-user or per-till fees, and no scaling fees as you grow. The fee you agree is the fee you pay.
Hours someone answers, in a normal week
Questions
About the platforms.
Do we have to use Kompass or Kassa?
No. They are where we start when a business holds stock and sells it. If yours does not fit them, we build what does, and say so up front.
Is it the same system every client gets?
No. They are frameworks: the foundations are the same and tested in daily use, and the modules, screens, steps, documents and connections are chosen and shaped for each business.
Can we start with one and add the other later?
Yes. Some start with Kompass in the warehouse, others with Kassa online or at the counter. The other can be added later, on the same products, stock and customers.
Where do you work?
We are based in the UK and build for businesses across the UK, Sweden and the rest of Europe. Both frameworks run in a browser, so the warehouse, the counter and the office can be anywhere.
Are they sold as subscriptions?
Neither is sold off the shelf. A build is quoted once, then one flat monthly fee covers hosting, support and changes. No per-user, per-order or per-sale fees, ever.
Tell us what you run on today.
We'll say which platform we'd start from, what we'd shape, and whether you need either at all.
hello@stackslim.co.uk · Replies within 4 hours, Monday to Friday

