SaleFlex Ecosystem | SaleFlex.PyPOS | SaleFlex.OFFICE | SaleFlex.GATE | SaleFlex.KITCHEN | SaleFlex.mPOS
SaleFlex.PyPOS is a modern, open-source point-of-sale terminal built with Python and PySide6 (Qt). It runs on standard touch-screen hardware, works fully offline, and connects to SaleFlex.OFFICE or SaleFlex.GATE when you are ready to scale.
Whether you run a single shop or a chain of stores, PyPOS gives your cashiers a fast, touch-optimised interface for sales, payments, closures, inventory, and customer loyalty - right out of the box.
Developed and operated by Mousavi.Tech
SaleFlex.PyPOS is built for:
- Retailers and restaurateurs who need a self-hosted, open-source POS terminal they can run on their own hardware without monthly fees.
- Developers and integrators who want a Python-based POS they can extend with custom modules, ERP connectors, or payment gateways.
- Small and medium businesses looking for a flexible alternative to expensive proprietary POS systems.
- Tech-forward teams who want full control over their data, peripherals, and integrations - without vendor lock-in.
SaleFlex.PyPOS is fully free and open source under the GNU Affero General Public License v3.0 (AGPLv3).
The Community Edition includes everything you need to run a complete POS operation:
- Touch-optimised sale screen with NumPad, PLU/barcode lookup, and line management
- Multi-payment processing (cash, card, mobile pay, split tender, loyalty points)
- End-of-day closure with Z-report and receipt printer output
- Customer management with loyalty points, tiers, and activity history
- Campaign and promotion engine (basket, product, time-based, buy-X-get-Y, payment discounts)
- Inventory management with stock-in, adjustment, and movement history
- Cashier management with role-based access control
- Offline-first - works without internet; syncs when connected
- SaleFlex.OFFICE and SaleFlex.GATE integration for multi-store operations
- Self-hosted - your data stays with you
Anyone can clone, run, and modify SaleFlex.PyPOS for their own needs. Contributions are welcome.
Need professional support or custom features? We offer:
- Custom development - tailored features, integrations, and workflows built for your business.
- Implementation & onboarding - hands-on setup, hardware configuration, and staff training.
- Priority support - dedicated support channels with guaranteed response times.
- Integration services - connecting PyPOS to your existing ERP, accounting, loyalty, or payment systems.
- Fiscal compliance - country-specific fiscal printer and e-invoice integrations.
Contact us at saleflex.pro for commercial enquiries.
Pair SaleFlex.PyPOS with SaleFlex Cloud (coming soon) for a fully managed backend:
- No server to manage - we handle updates, backups, and scaling.
- One-click OFFICE and GATE backend provisioning.
- Built-in sales, stock, and KPI reporting dashboards.
- Enterprise-grade security and compliance.
- Multi-region availability.
Join the waitlist at saleflex.net to be notified when Managed Cloud launches.
Pre-packaged installers for Windows and Linux are currently in preparation.
Until then, get started in minutes:
git clone https://github.com/SaleFlex/SaleFlex.PyPOS.git
cd SaleFlex.PyPOS
# Windows
python -m venv venv
venv\Scripts\activate.bat
# macOS / Linux
python3 -m venv venv
source venv/bin/activate
pip install -r requirements.txt
python saleflex.pyDefault login credentials:
| Username | Password | Role |
|---|---|---|
admin |
admin |
Administrator |
jdoe |
1234 |
Standard cashier |
Requirements: Python 3.13+ - PySide6 6.11+ - SQLAlchemy 2.0+ - Windows or Linux
Login Screen
Main Menu
Sale Screen
Payment Screen
End-of-Day Closure
Closure Detail
Product List
Customer Management
Warehouse Management
More videos covering the full workflow are being prepared and will be published on the SaleFlex YouTube channel shortly.
- Touch-optimised POS interface (PySide6, landscape tablet and desktop)
- Cashier login with role-based access control
- Sale screen with NumPad, PLU/barcode lookup, item discounts and markups
- Multi-payment processing with split tender and change calculation
- Campaign and promotion engine (basket, product, time-based, buy-X-get-Y, payment discounts, coupons)
- Customer management with phone-based loyalty, tiered points, earn and redeem
- End-of-day closure with Z-report, receipt printer output, and closure history
- Product management with tabbed detail view (info, barcodes, attributes, variants)
- Inventory management (stock-in, adjustment, movement history, low-stock alerts)
- Cashier management (create, edit, role permissions)
- Dynamic form rendering system (100+ DB-driven UI forms)
- SaleFlex.OFFICE integration (data sync, transaction and closure push, offline retry)
- SaleFlex.GATE integration foundation
- Offline outbox with automatic retry
- Central logging and typed exception hierarchy
- Single-instance lock and startup guards
- Settings screen (POS, loyalty, campaign management via UI)
- DataStore-based settings persistence
- Pre-packaged Windows and Linux installers
- Restaurant table management
- Kitchen display system (KDS) integration
- Fiscal printer and e-invoice support (Turkey, EU, USA)
- Barcode scanner and receipt printer hardware drivers
- Multi-language support
- Advanced reporting and analytics
- Multi-store and multi-terminal management
- SaleFlex Cloud (managed hosting)
| Project | Description |
|---|---|
| SaleFlex.OFFICE | Back-office and ERP-style management |
| SaleFlex.GATE | Central hub and API gateway |
| SaleFlex.KITCHEN | Kitchen display system |
| SaleFlex.mPOS | Android mobile POS |
| SaleFlex.POS | Legacy .NET POS client |
This project is licensed under the GNU Affero General Public License v3.0. See LICENSE for details.
Ferhat Mousavi |
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