MoneyUnify - A Simplified USSD Mobile Money Payments API that allows you to collect and disburse money from and to your customers using various mobile money network providers, in one place. Used in Africa and around the world for online Payments. Supports MTN Mobile Money, AirtelMobile Money, and Zamtel Mobile Money.

Rapyd Flutter SDK for accessing the Payments API

Python QIWI API Client

Learn how to send requests and catch webhooks using Rapyd Checkout and WhatsApp.

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🎫 Node.js wrapper for Blockchain.com's Payments API

The simplest Go payment library for the Cybersource REST API.

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This plugin contains the Pronamic Pay integration for the Worldline Direct Hosted Checkout.

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NuclearPayX is a modular, cloud-ready Fintech Infrastructure-as-a-Service (IaaS) platform built to power secure payment processing, digital wallets, and transaction management.

💸 Using the Braintree "Drop-in Tutorial" as a vehicle to learn more about online payments

PHP SDK dla płatności on-line BM (BlueMedia)