Browse free open source Payment Gateways and projects for Windows below. Use the toggles on the left to filter open source Payment Gateways by OS, license, language, programming language, and project status.
jBilling is a web-based enterprise billing system.
Bitcoin BitcoinCash Litecoin DASH BTC Payment API - PHP Wordpress ASP
Two Checkout blesta payment gateway. Implement inline checkout without
An open source financial switch to make payments fast
KhadashPay is my attempt to build a payment system from scratch.
A framework agnostic, multi-gateway payment processing library
Simple PayUMoney Payment Gateway Integration In PHP | Tutorial
Cryptocurrency Payment Gateway - your payment processor
All in one Merchant platform to sell your products and services online
VoIP billing