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 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.
Npm module for Node.js to validate In-app purchases and Subscriptions on your backend
An official read-only mirror of https://gitlab.com/flectra-hq/flectra , for bugs and issues, refer to gitlab repo.
: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.
用于应用内购买的轻量级且易用的iOS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.
:octocat: A Pharmacy Web application project made in Django created for my Dad
Madpharma - A convenient pharmacy management system developed by PHP and Codeigniter framework.
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.
A demo of In-App Purchase.苹果内购最详细教程
Security purchases checker & validator for Android
用于应用内购买的轻量级且易用的iOS库(A lightweight and easy-to-use iOS library for In-App Purchases.)。