Projects sharing features with Yansongda Pay

InsForge is a backend-as-a-service platform that provides an integrated suite of tools for managing relational databases, identity provision, object storage, and serverless compute. It functions as an open-source identity provider and a PostgreSQL database manager featuring integrated vector storage and row-level security. The platform serves as an LLM orchestration gateway, offering a unified endpoint to route requests across various AI providers through an OpenAI-compatible interface. It enables AI-driven application generation and connects AI agents to backend resources using a standardize

TastyIgniter is a comprehensive restaurant management system and digital ordering engine. Built as a modular application framework, it provides the tools necessary to operate online food ordering, table reservation systems, and multi-vendor e-commerce platforms. The platform is designed to handle complex restaurant operations, including multi-location networking and multi-vendor marketplace management. It distinguishes itself through specialized restaurant automation, such as coordinating guest limits and time slots for bookings, managing ingredient and allergen catalogs, and implementing mul

Jeepay is an open-source payment gateway that accepts payments through WeChat Pay, Alipay, and UnionPay from a single integrated system. It functions as a multi-channel payment platform with aggregated QR code generation, allowing customers to scan one code and pay with any supported method, while also providing multi-merchant account management for onboarding and isolating independent merchants with their own payment configurations. The system secures all API requests and responses using cryptographic signatures to verify authenticity and prevent tampering. It delivers asynchronous payment r

wechatpy is a Python API SDK designed for interacting with official accounts, mini programs, and corporate communication APIs. It provides a unified interface for managing users, media, and messages, and includes a bot framework for processing incoming events and generating structured responses. The project implements a component-based client factory to perform actions across different account types and orchestrates OAuth2 flows for identity verification. It features an event-driven bot architecture and a pluggable token storage system to persist authentication sessions across environments.

Polar is a digital product monetization engine and subscription management system. It serves as a merchant of record platform that handles global sales tax and VAT compliance, providing the infrastructure for selling subscriptions and one-time digital goods via hosted checkouts and embedded payment flows. The project functions as an entitlement and access manager, automating the granting and restriction of digital benefits, license keys, and third-party platform roles. It includes a dedicated usage-based billing infrastructure that tracks customer activity through meters to apply aggregation

Lilishop is a multi-vendor B2B2C e-commerce platform designed as a marketplace where third-party merchants can manage independent storefronts within a unified ecosystem. It is built on a Spring Cloud microservices architecture and a Spring Boot backend, utilizing Vue and Uniapp to deliver responsive user interfaces across web, mobile, and mini-program platforms. The platform differentiates itself through integrated marketing automation tools, including group buying, bargain campaigns, and a commission-based affiliate distribution network. It also features a comprehensive financial settlement

WeiXinMPSDK is a .NET software development kit designed to integrate WeChat services, official accounts, and mini programs into applications. It provides a multi-platform bot framework and a programmatic interface to interact with official, mini, and corporate accounts across the WeChat ecosystem. The project features interface-based platform abstraction and logic unification, allowing a single codebase to target multiple target platforms. It includes a messaging middleware for routing incoming requests and a distributed caching layer using providers like Redis or Memcached to synchronize ses

This project is a reference library of architectural blueprints, study materials, and design patterns for building scalable, high-availability distributed systems. It serves as a technical guide for scalability engineering, providing structural solutions for common engineering challenges. The repository focuses on distributed systems design, covering essential patterns for data replication, consensus algorithms, and transaction management. It distinguishes itself by offering detailed blueprints for specialized domains, including real-time data streaming, large-scale data storage, and high-ava

Active Merchant is a Ruby library that provides a payment gateway abstraction layer to process credit card transactions across multiple different payment processor APIs. It serves as a payment API wrapper, offering a consistent set of commands and classes that abstract the complexity of various provider request and response formats. The library utilizes a unified payment gateway API to standardize global payment processing and unify payment flows. It specifically includes a standardized interface for handling 3D Secure authentication and identity verification for card-not-present transactions

This project is a solo entrepreneur business framework and methodology designed to build sustainable, low-cost ventures. It provides a strategic system for creating small-scale businesses by converting professional knowledge into commercial products and utilizing automated services. The methodology emphasizes AI-driven business automation to replace repetitive manual labor with artificial intelligence, prioritizing high-value creative activities. It details strategies for niche market entry to identify underserved audience segments, reducing product complexity and avoiding direct competition

Vendure is a Node.js e-commerce engine and headless commerce framework built with NestJS and TypeScript. It serves as a multi-channel commerce platform that manages product catalogs, orders, and customers via a strongly typed GraphQL API. The platform is distinguished by its highly extensible architecture, featuring a customizable administrative dashboard where developers can inject custom React components and entity views. It supports multi-channel commerce, allowing the isolation of products, currencies, and regional catalogs from a single unified backend. The engine covers a broad range o

Django Oscar is a domain-driven e-commerce framework built on Django for constructing custom online stores. It provides a purpose-built admin dashboard for managing e-commerce operations including products, orders, customers, and promotions, replacing the default Django admin interface. The framework includes a flexible promotions engine for creating multi-buy, bundle, and percentage discounts with custom conditions and benefits, along with a configurable order status and transition system that supports split payments, multi-batch shipping, and deferred payment capture. The framework is desig

This project is a modular e-commerce platform built on Ruby on Rails, designed to serve as a comprehensive engine for managing online retail operations. It provides the foundational infrastructure to handle complex product catalogs, customer order lifecycles, and global payment processing within a unified system. The platform distinguishes itself through a headless, API-first architecture that decouples backend commerce logic from custom frontend storefronts. It supports multi-tenant environments, allowing for the management of multiple independent retail storefronts or marketplaces from a si

xpay is a payment collection and donation management system designed to accept transfers via personal QR codes. It enables the collection of funds into private accounts without the requirement for business licenses or official merchant API integrations. The system utilizes a provider-agnostic interface to route transactions across multiple personal accounts and payment methods through a single checkout page. It supports the aggregation of funds into individual identities and uses QR-code-based routing to facilitate payments from various mobile platforms. The platform includes tools for donat

Event platform is a full-stack web application designed for organizing events, purchasing tickets, and managing user registration profiles. The platform enables hosts to create, update, and manage detailed event listings complete with custom schedules and categories, while providing visitors with tools to search, filter, and explore activities. The system incorporates secure online ticket checkout processing alongside order tracking capabilities that maintain a searchable history of past purchases. Identity verification and user sessions are handled through external authentication providers,

This is an open-source e-commerce platform designed specifically as a WeChat Mini Program. It consists of a mobile shopping application and a server-side architecture utilizing Node.js and a MySQL relational database to manage product catalogs, user accounts, and order data. The project provides a full-stack commerce environment tailored for the WeChat ecosystem, integrating a frontend runtime with a backend capable of handling product inventories and purchase histories. The system covers the complete shopping experience, including product search, catalog browsing, and detailed item views. I

Crater is an invoicing and billing software system designed for creating professional invoices, estimates, and recurring billing schedules. It serves as a multi-entity accounting manager, allowing for the organization and separation of financial data and billing records across multiple different business organizations. The platform integrates payment gateway services to collect funds directly from customers and provides a secure client billing portal where customers can access account details and pay outstanding invoices. It also functions as an expense tracking application to log outgoing co

RxTool is an Android development utility library consisting of reusable components and helper classes for common mobile development tasks. It provides a coordinated set of toolkits for hardware interfacing, media processing, and user interface construction. The project features specialized implementations for mobile payment integration with Alipay and WeChat Pay, as well as dedicated tools for social sharing workflows. It includes a security-focused set of human verification widgets, such as puzzle and sliding captchas, to prevent automated bot interactions. The library covers a broad capabi

Kill Bill is a subscription billing platform and usage-based billing engine designed to manage recurring invoicing and automated payment collection. It functions as a multi-tenant billing infrastructure, providing isolated environments for different organizational entities through a dedicated API. The system is distinguished by a plugin-based extension framework that allows for the integration of third-party payment gateways and custom business logic. It includes a payment gateway orchestrator to handle transactions and refunds, as well as a revenue recognition system to allocate contract rev

This is a smart parking management system designed to automate vehicle identification, space reservations, and gate control through the integration of camera hardware and cloud services. It provides a comprehensive framework for managing parking operations, including a Spring Boot backend, a Vue JS administrative dashboard, and native mobile applications for users to locate and book spaces. The system is distinguished by its hardware integration capabilities, which include automated vehicle identification via cameras, remote device control, and manual override interfaces to maintain operation

eShop is a .NET microservices reference application that provides a comprehensive blueprint for a distributed retail system. It implements an e-commerce architecture using decoupled services to manage core operations such as product catalogs, shopping baskets, and order processing. The project demonstrates a cloud-native retail infrastructure that incorporates an asynchronous event bus system to synchronize state across distributed services. It includes a reference implementation for integrating generative AI features by connecting the store to large language models via cloud providers. The

Litemall is an open-source e-commerce platform built on Java and Spring Boot that provides a complete retail environment. It includes both a customer-facing storefront and a centralized administrative dashboard, enabling businesses to manage product catalogs, order lifecycles, and member accounts from a single system. The platform distinguishes itself through deep integration with the WeChat ecosystem, offering a mobile-optimized storefront and social authentication for streamlined user access. It utilizes a modular architecture that combines automated database access layers with custom SQL m

Akaunting is a modular business enterprise resource planning system and self-hosted accounting software. It provides a comprehensive platform for small business financial management, centering on a double-entry bookkeeping system with a general ledger and chart of accounts. The platform is designed for extensibility through a module-based architecture and a dedicated marketplace for procuring third-party applications. It supports multi-tenant data isolation and utilizes role-based access control to manage granular user permissions. Its capability surface covers a wide range of business opera

Geekai is a multi-model AI platform and SaaS framework designed to deploy and manage AI agents and multimodal models through a unified interface. It serves as a multimodal AI gateway, providing centralized access to large language models and generative tools for text, image, audio, and video production. The project functions as an AI agent orchestrator, allowing for the definition of specialized personas and the import of external workflows and knowledge bases. It distinguishes itself by providing a complete commercial service layer, including credit-based billing, subscription management, an

Tigshop is a multi-tenant e-commerce framework designed to support single-merchant, multi-merchant, and cross-border retail configurations. It functions as a B2B2C marketplace platform that connects suppliers, store owners, and customers through integrated storefronts and vendor portals. The system is distinguished by an automated revenue splitting engine that divides transaction payments between platforms, merchants, and suppliers based on defined service fee rules. It includes a tiered affiliate distribution system for tracking multi-level commissions and an omnichannel retail manager that

BTCPay Server is a non-custodial payment gateway and invoice manager designed for accepting Bitcoin and other cryptocurrencies directly into a private wallet. It serves as a self-hosted payment infrastructure that allows merchants to manage digital invoicing and storefronts without relying on third-party intermediaries. The system distinguishes itself through a non-custodial wallet architecture that ensures private keys remain on the user's own hardware or server. It integrates the Lightning Network for instant, low-cost transactions and provides a hardware-wallet signing bridge to secure tra