Awesome Billing

Apache Superset is a Data Visualization and Data Exploration Platform

Open source, composable payments platform | PCI compliant | SaaS and Self-host options | Enables connectivity to multiple payment, payout, fraud, vault and tokenization providers | Uplifts authorization with intelligent routing and revenue recovery | Reduce payment processing costs with cost observability | Reduces payment ops with reconciliation

📙 Amazon Web Services — a practical guide

Make Your Company Data Driven. Connect to any data source, easily visualize, dashboard and share your data.

The financial transactions database designed for mission critical safety and performance.

Cloud cost intelligence for engineers, AI coding agents, and CI/CD 💰📉 Shift FinOps Left!

Open Source Metering and Usage Based Billing API ⭐️ Consumption tracking, Subscription management, Pricing iterations, Payment orchestration & Revenue analytics

Polar — A billing platform for the intelligence era

A unified framework for machine learning with time series

A python library for user-friendly forecasting and anomaly detection on time series.

🎉 Flexible invoicing desktop app with beautiful & customizable templates.

Free Accounting Software

Open-source cloud-environment inspector. Supporting AWS, GCP, Azure, and more! Your cloud resources will have nowhere to hide!

Core Framework for the Open Core Data & Experience Management Platform (PIM, MDM, CDP, DAM, DXP/CMS & Digital Commerce)

A self-hosted open source application for managing your invoices, clients and payments.

Deep neural network to extract intelligent information from invoice documents.

Meltano: the declarative code-first data integration engine that powers your wildest data and ML-powered product ideas. Say goodbye to writing, maintaining, and scaling your own API integrations.

Open Source Pricing & Packaging Infrastructure

The programmable open source core ledger for fintech

Bayesian marketing toolbox in PyMC. Media Mix (MMM), customer lifetime value (CLV), buy-till-you-die (BTYD) models and more.

Invoice and quotation builder desktop app with PDF export, designed for small businesses and freelancers. Create, manage, and export invoices and quotes easily using a local database in an Electron-based app.

Open Source License Key Generation and Verification Tool written in Go

ACH implements a reader, writer, and validator for Automated Clearing House (ACH) files. The HTTP server is available in a Docker image and the Go package is available.

A golang implementation to marshal and unmarshal iso8583 message.

Blnk is an open-source ledger & financial core for shipping fintech products fast.

Real-time Charging System for Telecom & ISP environments

AML/CTF/KYC/OFAC Search of global watchlist and sanctions

Accounting Software with GRPC endpoints and SQL Backends

Go Business Language

Python lib for Factur-X, the e-invoicing standard for France and Germany

Double entry accounting in Django

Ruby invoicing framework gem

Managed accounts for Django (with or without django-oscar)

Swift Codes or BIC Codes for all the Banks in the world. Cached to json.

Library to generate PDF invoices.

Fast & elegant PDF invoice generator for Node using PDFKit. No Puppeteer

Zero-maintenance and smart FOSS generating beautiful invoices for services and expenses.

No description.

💸 {Digital,Cloud,Electronic,Online} Services VAT Rate Database

Bookkeeping in Python

Stripe-native usage metering with real-time cost projections, exactly-once processing, and invoice parity guarantees.

[DEPREDATED] Central repo for fraud and risk management development and specifications

A summary of research in RTB Budget Pacing