gringotts - A complete payment library for Elixir and Phoenix Framework

•    Elixir

Gringotts is a payment processing library in Elixir integrating various payment gateways, drawing motivation from Shopify's activemerchant gem and commerce_billing. Checkout the demo here. Gringotts offers a simple and unified API to access dozens of different payment gateways with very different APIs, response schemas, documentation and jargon.

Payment-Gateway - Bitcoin/Altcoins PHP Payment Class

•    PHP

PHP Cryptocoin Payment Gateway is a simple PHP/MySQL script / Wordpress Plugin which you can easily integrate into your own website in minutes.

paynode - Mega library that includes various loadable modules for interacting with different payment gateways

•    Javascript

Paynode is the new superset payment gateway module that will provide nodejs adapters for various payment gateways. This is all a rapid rework of my exisiting paypal-payflowpro module so expect some API changes to happen quite rapidly.

DIBS payment gateway provider for NB_Store

This is a payment gateway for the DNN e-commerce module NB_Store. It communicates with the payment provider DIBS

OmniPay - A framework agnostic, multi-gateway payment processing library for PHP 5.3+

•    PHP

Omnipay is a payment processing library for PHP. It has been designed based on ideas from Active Merchant, plus experience implementing dozens of gateways for CI Merchant. It has a clear and consistent API, is fully unit tested, and even comes with an example application to get you started.

Magento Payment Module for Payleap

•    PHP

This module provides access to Payleap Payment Gateway. Specifically, this module uses the Direct Payment product of Payleap. Payleap Direct Payment allows payments without redirect the visitor to a Payleap website.

BTCPay Server - Accept Bitcoin payments

•    CSharp

BTCPay Server is a self-hosted, open-source cryptocurrency payment processor, which allows you to accept bitcoin without fees or intermediaries.. It's secure, private, censorship-resistant and free.

PagSeguroGateway is a payment gateway provider in Brazil for NBStore

PagSeguroGateway is a payment gateway provider in Brazil for NBStore. PagSeguro is a company of UOL group.

MoneyBaby - Payment Processors for .NET

Maintaining credit card gateways by yourself is a huge pain. MoneyBaby's goal is to provide a collection of realiable, reusable code for payment transactions that can be maintained by a community of active developers. Major credit card gateways are the first target but the pro...

ePay payment gateway provider for NB_Store

ePay payment gateway provider for DNN module NB_Store

omnipay - Omnipay is a framework agnostic multi-gateway payment processing library for PHP 5.3+

•    PHP

Omnipay is a framework agnostic multi-gateway payment processing library for PHP 5.3+

nopCommerce Buckaroo payment provider plugin

This is a payment provider plugin for the dutch payment provider BUCKAROO. This plugin is developed and tested for nopCommerce version 2.65

Copay - The Secure, Shared Bitcoin Wallet

•    Javascript

Copay is a secure bitcoin wallet platform for both desktop and mobile devices. The Copay app securely stores multiple, distinct bitcoin wallets, allowing both business and privacy-conscious users to keep funds carefully separated. It makes sharing a wallet simple and secure. It is one of the first bitcoin wallets to support the full Bitcoin Payment Protocol (BIP 0070-0073).

streamium - Decentralized trustless video streaming using bitcoin payment channels.

•    Javascript

Streamium is a fully decentralized paid video streaming application. It leverages various prior technologies like bitcoin and WebRTC to achieve trustless pay-as-you-go video streaming with no intermediaries.Content creators offer their streaming services in exchange for bitcoins using a payment channel with the client, streaming a series of cost-free transactions with no counterparty risk.

wechat-pay - wechat payment api for document v3.3.5

•    Javascript

wechat payment api for document v3.3.5

Payment - 基于

•    CSharp

基于 .NET Core 2.1 / ASP.NET Core 2.1 开发的跨平台支付SDK集。简化了API调用及相关通知的处理流程。目前支持：支付宝(Alipay)、微信支付(WeChatPay)、QQ钱包(QPay)、京东支付(JDPay)、连连支付(LianLianPay)、银联支付(UnionPay)

payment-icons - 💳 Payment / Ecommerce related svg icon packs

•    Javascript

Payment related svg icons for use in fonts or spritesheets. The raw .svg output (from a mix of sketch and inkscape) is in the svg directory. The minified svg output is in the min dir.

react-native-payments - Accept Payments with Apple Pay and Android Pay using the Payment Request API

•    Objective-C

This project is currently in beta and APIs are subject to change. Accept Payments with Apple Pay and Android Pay using the Payment Request API.

Kill Bill - Open-Source Subscription Billing & Payment Platform

•    Java

Kill Bill is the open-source subscription billing and payments platform. It supports Subscription engine, with plans management (trial, upgrade, downgrade, etc.), support of add-ons, bundles with multiple subscriptions, Invoicing engine, supporting different billing alignments, recurring and one-time charges, international tax, metered billing, Payment state machine, with payment routing capabilities, supporting dozen of gateways and lot more.

react-credit-cards - Beautiful credit cards for your payment forms

•    CSS

Beautiful credit cards for your payment forms