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

One library | Many payment processors | Scale to multiple processors with few lines of code.

💰 Billing & Payments knowledge for cloud platforms

SHKeeper is a self-hosted and open-source cryptocurrency gateway payment processor. It's integrate with popular CMS, any e-commerce, your own code or product

🌟 A curated list of Bitcoin payment processors enabling merchants, businesses and nonprofits to accept Bitcoin payments.

PHP SDK for Authorize.Net API

📱Android Library to implement UPI Payment integration easily in Android App 💳💸

Sell what you want without paying double commissions. Self hosted alternative for Gumroad, Buy Me a Coffee, Ko-fi etc.

💰 A .NET/C# implementation of the Coinbase API.

Provides an injectable Stripe client to nestjs modules

.Net SDK for Authorize.Net API

Payment abstraction library - one interface for multiple payment processors ( inspired by Ruby's ActiveMerchant )

English documentation of the ČSOB Payment Gateway that offers an API for credit card payments, Apple Pay, Google Pay, mallpay and ČSOB Payment Button.

An online Book Store createed with Python / Flask rest, MySql,Angular and Bootstrap

Python client library for the Square API

Bank credit card deep layout analysis, fields extraction and recognition/OCR (ScanToPay) using deep learning

💳 Native elixir client for Braintree

Salesforce Commerce Cloud (formerly Demandware)

Modern, enterprise-grade Point of Sale system built with Golang, React, TypeScript, and PostgreSQL. Features beautiful admin tables, role-based access, and professional UI/UX.

Golang wrapper for Mollie's REST API with full resource coverage.