A Node.js library for creating ZUGFeRD/Factur-X compliant documents. Generating XML and embedding it into PDF/A files, enabling seamless e-invoicing and digital document compliance.

Free and open source Invoice-System-In-PHP

This is a cross platform mobile application template for invoice generation and income management for entrepreneurs and freelancers. It was built with Ionic/Angular.

BillQuill is a full-stack web-based invoicing application, allowing users to generate, download, and share invoice. Written in NextJS, TypeScript, MongoDB, Prisma, and other fantastic tools.

SuperSaverPOS is a Point of Sale (POS) system designed for supermarket management. This application allows administrators to manage bills, add items to bills, and generate invoices in PDF format. The application also provides an admin panel for managing branch details, cashier information, and discount settings.

A .NET application implementing the Factory Pattern to generate invoices in various formats (PDF, TXT, CSV). Utilizes QuestPDF for creating professional PDF documents and the Repository Pattern for organized and maintainable data access.

Order & invoice management for Symfony, ideal for SaaS, services, and digital products.

Invoice generation utility using NodeJS/ExpressJS. Handlebars, jQuery, Boostrap and MySQL

Generate custom invoices. Hosted on Cloudflare Workers.

Multi-company water consumption tracking with vendor management, attendance-based billing, and invoice generation

A feature-rich Django POS System for Galos Gadget Hub. Handles multi-branch inventory, barcode scanning, credit-approved installments, warranty management, and supplier contracts. Real-time analytics dashboard with CSV exports & audit logs. Production-ready deployment with custom SSL.

Multi-vendor corporate food management with attendance integration, menu pricing, and automated billing

Bulk-generate invoices from a data source

Production-style AI agent for automated contract-to-invoice pipeline with rule-based computation and validation

PickUp Laundry is a JSP-based web application facilitating laundry service orders. It offers user registration, dynamic service loading, invoice generation, and Razorpay-integrated payments, all with Captcha authentication and search functionality. Includes auto-refresh and consumes Web Services.

HABRILIBRARY est une solution de gestion intégrée (ERP) conçue pour les librairies, papeteries et commerces de détail

Sparks Foundation (GRIPsept21)

ShopEase is a simple PHP application that allows users to select a product, provide their details, and receive an invoice with VAT, discount, and delivery charges calculated. The application uses Bootstrap for styling.

A Python-based console application for managing skin care product sales and inventory, featuring VAT calculation, promotional offers, invoice generation, and file-based data storage using a modular programming approach.

Java-based Retail Billing Software with billing, inventory management, and customer record features.