📊 Track and manage your financial transactions easily with Ledger, designed for simple and efficient record-keeping.

✈️ Predict game outcomes with the Aviator Predictor to increase your chances of winning in the Aviator Game. Gain an edge beyond luck alone.

🎲 Explore demo files in this randomly created repository, inspired by PayPal, showcasing simple projects and examples for developers.

Seamlessly handle repairs, invoices, payments, and generate reports in a fast-paced repair business environment.

Online Accounting Software

Ever® Gauzy™ - Open Business Management Platform (ERP/CRM/HRM/ATS/PM) - https://gauzy.co

Self-hosted invoicing without the bloat.

Dolibarr ERP CRM is a modern software package to manage your company or foundation's activity (contacts, suppliers, invoices, orders, stocks, agenda, accounting, ...). it's an open source Web application (written in PHP) designed for businesses of any sizes, foundations and freelancers.

Multi-tenant e-commerce SaaS platform built with Next.js, React, and NestJS. Features include storefront, admin dashboard, invoicing, payments (Stripe, PayPal, M-Pesa), and multi-currency support.

💸BiznisBox is the all-in-one business platform that helps you manage your business, from invoicing to contracts, and more

Open source C# e-invoicing library. Enables creating and reading ZUGFeRD invoices.

💵 Bigcapital is financial accounting with intelligent reporting for faster decision-making, an open-source alternative to Quickbooks, Xero, etc.

Ubilling is an open-source billing system designed for Internet service providers (ISPs). It provides tools for managing subscribers, handling payments and creating detailed reports. Ubilling allows control and monitoring of a wide range of network equipment and can be easily extended with custom functionality.

Kimai is a web-based multi-user time-tracking application. Works great for everyone: freelancers, companies, organizations - everyone can track their times, generate reports, create invoices and do so much more. SaaS version available at https://www.kimai.cloud

A .NET typesafe implementation of Stripe's Subscription Items API

A .NET typesafe implementation of Stripe's Invoice Items API

Open-source Pricing and Billing Infrastructure 🚀 Subscription management, Invoicing, Pricing, Usage-based billing, Cost limiting, Grandfathering, Experiments, Revenue analytics & Actionable insights

Common invoice statuses

Stripe events enum

Stripe Proration behavior enum