Live product

MiniBook3

Offline point-of-sale for a single shop. Run shifts, sell with mixed-tax checkout, print thermal or PDF receipts, and close the day with a Z-Report — all stored on your machine. No cloud account required.

Download v1.0.5 Read case study →

LinuxWindows

v1.0.5 · Stable release

Offline-firstLocal SQLite

PyWebviewDesktop shell

470+Automated tests

MiniBook3 · Offline checkout · PyWebview · SQLite · v1.0.5

Shop registerLive

What MiniBook3 does

Built for the counter. Scan or pick products, take cash or card, print a receipt. Admins manage products, users, and backups in the same app. Works offline; data stays in local SQLite.

What it does

Three-column checkout UI · 4 shop modes (Pharmacy, Boutique, Food, Misc) chosen at setup
Shifts with drawer open/close and variance · Mixed-tax sales · Cash and card payment
Suspend and recall carts · Returns by receipt number
Thermal 58 mm / 80 mm + PDF receipts · USB barcode scanner · Cash drawer kick
Z-Report (admin) · Product catalog + CSV import · Daily automatic backup · Up to 10 users

Product tour

A day at the counter with MiniBook3

Screens from the v1.0.5 desktop app — from opening the register to closing the shift and the customer display.

MiniBook3 sign-in screen with offline-first branding

Sign in · Local users · No cloud required

Step 1v1.0.5

Open the register

Staff sign in with a local account. Checkout, catalog, and reports stay available without internet.

In this screen

Local user accounts with role-based permissions
Works offline from the first sale of the day
Desktop shell on Linux and Windows

MiniBook3 checkout screen with product grid and cart

Checkout · Catalog · Barcode · Cart · Tender

Step 2v1.0.5

Sell at the counter

Three columns keep catalog, cart, and payment in view. Scan, tap, or search — then take cash, card, or mixed tender and print a receipt.

In this screen

Visual catalog grid tuned to your shop mode
Suspend and recall carts during busy periods
Thermal 58 mm / 80 mm or PDF receipts on every sale

MiniBook3 product catalog table with filters

Catalog · Table view · Filters · Stock

Step 3v1.0.5

Manage the product list

Admins edit prices, tax, stock, and barcodes in one table. Import from CSV when setting up or updating lines.

In this screen

Fast search and column filters
Mixed-tax categories per product
CSV import for bulk updates

MiniBook3 product detail drawer showing price and stock

Product drawer · Price · Tax · Stock · Barcode

Step 4v1.0.5

Product details nearby

Open any product from checkout or the catalog to see price, tax, stock, and identifiers without leaving the flow.

In this screen

Inline edit from the drawer
Tax category and barcode visible at checkout
Stock warnings before you oversell

MiniBook3 shifts screen with Z-report and tender breakdown

Shifts · Drawer · Z-Report · Tender mix

Step 5v1.0.5

Close with a Z-Report

Open and close shifts with drawer counts, see variance, and review cash, card, and other tenders before locking the register.

In this screen

Live shift drawer with opening float
Z-Report summary for admins
Per-tender totals and session history

History · Receipts · Search · Drill-down

Step 6v1.0.5

Transaction history

Every sale is stored locally. Search by receipt, date, or amount, then open line items, tax, tender, and operator.

In this screen

Searchable transaction list
Receipt-level detail without leaving the app
Local SQLite storage — your data stays yours

MiniBook3 partial return screen with quantity steppers

Returns · Partial · Full · Line control

Step 7v1.0.5

Returns

Look up a receipt and reverse the order or selected lines. Partial quantities keep stock and tender in sync.

In this screen

Full or partial reversal by line
Per-line quantity control
Stock and tender adjusted automatically

MiniBook3 store settings showing Free, Solo, and Enterprise plans

Plans · Free · Solo · Enterprise

Step 8v1.0.5

Free, Solo, or Enterprise

Start on Free forever with honest limits. Upgrade to Solo for credits, returns, and full branding — or Enterprise when you want the connected layer later.

In this screen

Free: run a real register forever — no countdown
Solo: unlock credits, team, returns, and receipt branding
Enterprise: connected features when you need them

MiniBook3 customer-facing display showing live cart

Customer display · Second screen · Live cart

Step 9v1.0.5

Customer display

A second screen shows the live cart — items, quantities, and totals — while you ring up the sale.

In this screen

Real-time cart mirror on a second screen
Configurable welcome and idle screens
Works alongside the main checkout flow

MiniBook3 customer display thank you screen after payment

Complete · Receipt done · Next customer

Step 10v1.0.5

After payment

When payment clears, the customer display shows a thank-you screen while you print or send the receipt.

In this screen

Clear end-of-transaction state for customers
Pairs with thermal 58 mm / 80 mm or PDF receipts
Keeps the line moving at peak hours

Plans

Choose how you run MiniBook3

Start on Free forever with honest limits. Upgrade to Solo when you need credits, returns, and full branding — or Enterprise for the connected layer later.

F R E E

MiniBook3 Free

Free forever

Run a real shop register free forever — catalog, checkout, and shifts with honest limits.

Run your register free forever — no trial countdown
Catalog, cash/card checkout, and barcode scan-to-sell
Shifts and basic receipts for day-one commerce
Honest limits that grow with your shop
Upgrade to Solo when you need credits, team, and exports

S O L O

MiniBook3 Solo

$80 / year

Offline shop register on one machine. No cloud account required.

Everything on Free, without capacity caps
Credits, settlements, and on-account tender
Returns desk and full receipt branding
Team accounts, customer display, and CSV exports
Shifts, cash drawer, and end-of-day Z-Report
Thermal 58 mm / 80 mm and PDF receipts
Automatic local backups

E N T E R P R I S E

MiniBook3 Enterprise

$150 / year

Full PoS on the counter, plus connected Enterprise features for cloud backup, fleet inventory, web stocking, and digital menu as they become available.

Everything in SOLO
Cloud backup and guided disaster recovery (coming soon)
PoS fleet with shared store inventory (coming soon)
Merchant web app for stocking and fleet health (coming soon)
Digital menu and self-ordering for food and pharmacy (coming soon)

After activating MiniBook3, manage subscriptions from Settings → Payments inside the app.

Capabilities

Main features

Counter checkout

Catalog · Barcode scan · Cart · Cash/card · 58/80 mm receipt

Day operations

Shifts · Drawer variance · Z-Report · Returns

Shop admin

Products · CSV import · Users · Backup · Local SQLite

Technology

ReactTypeScriptVitePythonPyWebviewSQLitePyInstaller

FAQ

MiniBook3 PoS questions

Does MiniBook3 work offline?

Yes. MiniBook3 is an offline-first PoS register for Linux and Windows so shops keep selling when the internet fails. License verification and optional cloud billing use the network when available; till sales are local-first.

How long does it take to set up a new POS like MiniBook3?

Installers are guided; most single-register shops complete install, products, and staff roles the same day. Multi-store catalogs, tax setups, and peripherals add time. Download builds from minibook3.zolestio.com/downloads or ask us for assisted onboarding.

Can MiniBook3 be customized for my business?

Product packages cover common retail needs. Deeper customizations (unique workflows, hardware, reports) are engineering engagements on top of our PoS practice — the same team that builds MiniBook3.

What reporting features do I get at end of day?

Shift handling and Z-Report style reconciliation are core. You get visibility into sales by period/shift so cash and card totals can be matched before the shop closes.

How secure are modern POS systems like MiniBook3?

We combine local data custody, role-based access, and careful payment integration boundaries. On-device data stays under your control; cloud license and subscription traffic uses production APIs. Ask us about your compliance checklist during scoping.

What questions should I ask before buying a POS system?

Ask about offline behaviour, tax correctness, export/ownership of your data, hardware support, training, and what happens when the vendor is offline. We answer those plainly for MiniBook3 and for custom builds.

Install MiniBook3

Download v1.0.5 with Linux and Windows installers, SHA256 checksums, and step-by-step install guides at minibook3.zolestio.com.

Download v1.0.5 PoS services →

Case study

How we built the offline checkout shell, local SQLite ledger, role permissions, and cross-platform PyInstaller releases.

Read case study →

Downloads

tarball, AppImage, .deb, and Windows installer.

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