I need a complete, web-based billing application tailored for day-to-day retail sales. The system must open in a browser, greet the user with a clean dashboard, and let staff ring up sales quickly while keeping stock levels and basic accounts in sync behind the scenes. Core functions I expect • Retail-style invoicing with GST/SST/VAT ready fields and printable receipts • Real-time inventory management so every sale instantly updates stock • Lightweight accounts management—daily cash-book, expense entry, and simple ledgers • Dashboard widgets that highlight today’s sales, low-stock alerts, and outstanding payments Deliverables 1. Fully working web app, ready to deploy on any standard LAMP/VPS setup 2. Source code with clear comments and a brief README covering install steps and default credentials 3. SQL script (or ORM migration) to create all tables and seed minimum demo data 4. One short video or PDF walkthrough showing how to add an item, complete a sale, and view reports Acceptance criteria – All listed features function in the demo without errors – Page loads stay under 2 seconds on a modest shared host – Source passes a quick manual review for obvious security issues (SQL injection, weak passwords) – Final ZIP is delivered once, for a single payment of roughly ₹5,000—no recurring licence fees Tech stack is your choice; PHP-MySQL, Node-Express, Django, or similar are fine as long as installation instructions are clear. I’ll test on my server and release payment when everything runs smoothly.