There are 2 repositories under purchase topic.
Dolibarr ERP CRM is a modern software package to manage your company or foundation's activity (contacts, suppliers, invoices, orders, stocks, agenda, accounting, ...). it's an open source Web application (written in PHP) designed for businesses of any sizes, foundations and freelancers.
Easy work with virtual wallet
A Node.js module for in-App-Purchase for iOS, Android, Amazon and Windows.
Library for Android In-App Billing (Version 3+)
Reading and Validating In App Purchase Receipt Locally.
A framework to add patronage to your apps.
A Simple and Lightweight framework for In App Purchase
iOS SDK for cross-platform in-app purchase and subscription infrastructure, revenue analytics, engagement automation, and integrations
A modern multi-wallet Laravel package with comprehensive logging and payments capabilities.
Android Library for easing Google Play Billing to your apps with support for Subscriptions, Non-Consumable and Consumable Purchases with a beautiful sample app.
deftERP - Jakarta EE Web Profile (Java EE 7 : JSF, JPA, EJB, CDI, Bean Validation)
It is java accounting software basically developed using javafx which has various modules like purchase, sales, receipts, payments, and journals.
QuickShop is a shop plugin that allows players to easily sell/buy any items from a chest without any commands. In fact, none of the commands that QuickShop provides are ever needed by a player.
A simple and customisable in-app purchase button, written in Swift.
An official read-only mirror of https://gitlab.com/flectra-hq/flectra , for bugs and issues, refer to gitlab repo.
Npm module for Node.js to validate In-app purchases and Subscriptions on your backend
:moneybag: A NativeScript plugin for making in-app purchases!
Rx wrapper for Billing Library with connection management
Open source software for POS and Automated Accounting.
一个轻量级且易用的iOS应用内购库(A lightweight and easy-to-use iOS library for In-App Purchases.)。
Apex is a self hosted sales, purchase, inventory and accounting solution for small businesses.
Madpharma - A convenient pharmacy management system developed by PHP and Codeigniter framework.
:octocat: A Pharmacy Web application project made in Django created for my Dad
Unity SDK for growing mobile in-app purchases
This demo app provides all 3 types of product to demonstrate the procedure and capability of Huawei IAP.
一个轻量级且易用的iOS应用内购库(A lightweight and easy-to-use iOS library for In-App Purchases.)。
A demo of In-App Purchase.苹果内购最详细教程
Security purchases checker & validator for Android