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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
TranslatedWeChat development Java SDK, supporting back-end development for WeChat Pay, Open Platform, Mini Programs, WeCom (Enterprise WeChat), Channels (video accounts), Official Accounts, and more
Polar — A billing platform for the intelligence era
Bindu: The identity, communication, and payments layer for AI agents.
Accept Bitcoin payments. Free, open-source & self-hosted, Bitcoin payment processor.
The user infrastructure platform. You choose the frontend, backend, and database. Hexclave handles everything else.
Lightweight In App Purchases Swift framework for iOS 8.0+, tvOS 9.0+ and macOS 10.10+ ⛺
A framework agnostic, multi-gateway payment processing library for PHP 5.6+
Open-Source Subscription Billing & Payments Platform
TranslatedGo version SDK for WeChat, Alipay, Douyin, Allinpay, Lakala, PayPal, and Apple. [A minimalist, easy-to-use aggregated payment SDK]
TranslatedPossibly the most elegant payment SDK extension package for Alipay/WeChat/Douyin/Unipay/江苏银行 (Bank of Jiangsu) that I have ever used
Building a Secure and Interoperable Future for AI-Driven Payments.
weixin/wechat/微信公众平台/微信企业号/微信商户平台/微信支付 go/golang sdk
Laravel Cashier provides an expressive, fluent interface to Stripe's subscription billing services.
Payments for Ruby on Rails apps
支付宝 AliPay SDK for Go, 集成简单，功能完善，持续更新，支持公钥证书和普通公钥进行签名和验签，支持文件上传和接口内容加密。
Source code of the recurrent donations platform Liberapay
PHP Payment processing library. It offers everything you need to work with payments: Credit card & offsite purchasing, subscriptions, payouts etc.
PowerWechat是一款基于WeChat SDK for Golang，支持小程序、微信支付、企业微信、公众号等全微信生态
Golang client for PayPal REST API
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
Payum offers everything you need to work with payments. From simplest use cases to very advanced ones.
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 complete payment library for Elixir and Phoenix Framework