MargPOS Desktop

About

MargPOS Desktop is a complete, 100% offline Windows application for retail billing, inventory, and business management — built for shops that need software with zero internet dependency.Unlike most modern billing tools that call themselves "offline-capable" but still rely on a cloud server, MargPOS Desktop is architecturally different: the application, its database, and every core function run entirely on the shop's own computer. All data is stored locally in an embedded SQLite database — no cloud service, no subscription server, no internet connection required for daily operation.Key Features:- Barcode and QR code scanning (USB scanner + camera), covering manufacturer-printed barcodes and QR codes- Fast POS billing with cart management, multiple payment modes (Cash, UPI, Card, Credit/Udhaar, Split Payment)- GST Tax Invoice and thermal receipt printing (58mm/80mm), plus WhatsApp invoice sharing- Full inventory management with purchase entry, low-stock alerts, and barcode label printing- Sales and Purchase Returns with automatic stock adjustment and Credit/Debit Note generation- Digital customer credit ledger (Udhaar Khata) with payment tracking and WhatsApp reminders- PIN-based multi-user login with Owner/Staff role-based access control- Complete GST compliance engine — both Regular (Tax Invoice) and Composition Scheme (Bill of Supply) modes, GSTR-1 style reporting, HSN summaries- One-click local database backup/restore- Hardware-locked licensing system with trial and paid activation key generation — ready to license out to your own future customersThe software is currently installed and in active daily use by a real retail shop, and has gone through multiple rounds of testing and refinement.This is a full source code and ownership transfer — the buyer receives complete rights to rebrand, resell, license to shop owners, or extend the software as they see fit. Built with Electron, React, TypeScript, and SQLite — a modern, maintainable stack.Reason for selling: I run a freelance web development business and don't currently have the bandwidth to properly scale and support this as its own product.