Open-source alternatives to Roncoo Pay

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

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

Payload is a headless content management system and application framework that uses a code-first approach to define data schemas and administrative interfaces. By utilizing a centralized, type-safe configuration object, it automatically generates database schemas, API endpoints, and a fully customizable admin panel. The system is built on a database-agnostic architecture, allowing it to interface with various storage engines while providing a unified, type-safe API for server-side operations, REST, and GraphQL. What distinguishes Payload is its deep extensibility and developer-centric design.

Certd is a self-hosted platform that automates the full lifecycle of SSL certificates using the ACME protocol. It handles certificate application, renewal, and deployment across multiple domains through a pipeline-driven workflow engine, with DNS challenge orchestration and multi-cloud deployment capabilities. The platform distinguishes itself through its configurable pipeline system, which allows users to build multi-step workflows that can pass outputs between tasks, execute custom scripts, and handle errors. It supports multi-tenant access control with role-based permissions, encrypted cre

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

Omnipay is a PHP payment gateway library and integration framework that abstracts multiple payment service providers into a single, consistent API. It provides a standardized interface for managing payment lifecycles, allowing applications to execute authorizations, captures, and refunds across various financial services without rewriting code for each provider. The framework decouples application logic from provider-specific SDKs using an adapter pattern and data-transfer objects. This architecture ensures that raw gateway responses and HTTP requests are converted into predictable data shape

Medusa is a headless commerce engine designed as a modular, API-first platform for building custom digital storefronts and business applications. Its architecture is built on a decoupled system where core business logic is encapsulated into independent, swappable modules that communicate through defined interfaces, allowing developers to incrementally adopt or replace components to fit specific operational needs. The platform distinguishes itself through a highly extensible design that supports complex commerce requirements, including multi-vendor marketplace operations, B2B purchasing workfl

This project is a read-only archive of historical versions and development records for an early V8-based JavaScript runtime. It functions as an event-driven server-side environment that executes JavaScript code outside of a web browser. The archive preserves the identity of the runtime as an evented I/O framework, designed for handling asynchronous network and file system operations through a non-blocking event loop. It provides access to read-only records of old issues and pull requests to track the evolution of these legacy versions. The project covers the domain of server-side execution a

AWS Powertools for Python is a utility framework designed for building production-ready Python functions on AWS Lambda. It provides a comprehensive suite of tools for observability, event parsing, routing, and idempotency management to streamline the development of serverless applications. The project distinguishes itself through specialized capabilities for event-driven architectures and AI agent orchestration. It enables the implementation of AI agents by exposing functions as tools via OpenAPI schemas and managing conversation states. Additionally, it features an idempotency library that p

Hiredis is a minimalistic C client library designed to send commands and receive responses from Redis servers using a binary-safe protocol. It functions as a core toolkit providing a Redis protocol parser, a secure connector, and both synchronous and asynchronous driver interfaces. The library distinguishes itself through a decoupled protocol parser that converts raw byte streams into structured data objects independently of the network transport layer. It supports high-performance pipelining to batch multiple commands into a single network round-trip and provides a secure networking layer fo

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

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

Flecs is a high-performance entity component system framework and data-oriented programming library. It serves as a simulation engine core and game engine architecture tool, decoupling state from behavior by separating entities, components, and systems. The framework features a runtime reflection layer for dynamic data inspection and a built-in scripting system for defining entity behavior without recompilation. It also includes a network interface and REST API for remote simulation administration and state querying. The library covers a broad surface of simulation capabilities, including ar

This project provides a suite of development kits and frameworks for interacting with Slack, including a Web API client for authenticated requests and the Bolt framework for building asynchronous applications. It serves as a SDK for creating automated bots and integrating external software systems with Slack workspaces. The toolkit includes a specialized Events API client for listening to real-time system triggers and executing custom callback logic. It supports the development of automated assistants capable of sending messages and managing data exchanges via webhooks. The library covers a

Kue is a Redis-backed job queue library for Node.js that provides a complete system for defining, scheduling, and processing background work. It stores job metadata and state in Redis lists and sorted sets, enabling persistent, in-memory operations with configurable concurrency control and priority-sorted processing. The library includes a RESTful HTTP API for managing jobs and a web-based monitoring dashboard for inspecting job status, progress, and logs. The system distinguishes itself through its event-driven worker model, where workers listen for job events via Redis pub/sub and process j

Headjs is an asynchronous asset loader designed to load JavaScript and CSS files in parallel and execute them in a specific sequence to improve page speed. It functions as a resource dependency manager that tracks script loading status and executes callbacks only after all required dependencies are fully loaded. The project includes a browser feature detection library that checks for HTML5 and CSS3 capabilities. This allows for conditional resource loading, where assets are delivered based on detected browser features, device capabilities, or screen resolution. The system further manages fro

WxJava is a set of Java libraries providing backend integration for the WeChat ecosystem and its various platform APIs. It serves as a comprehensive toolkit for managing identity, application infrastructure, and connectivity between backend services and the WeChat platform. The project provides specific SDKs for different WeChat domains, including official accounts, mini-program backends, and the WeChat Open Platform for third-party authorizations. It also includes a dedicated connector for integrating corporate communications and organizational workflows via the Enterprise WeChat platform.

wxauto is a Python library and bot framework designed for the programmatic control of the WeChat Windows desktop client. It functions as a wrapper that enables the automation of messaging and social feed functions by simulating user interface interactions. The library distinguishes itself by providing a bridge between network requests and local UI automation, allowing users to expose automation capabilities via a web interface. It utilizes background execution and simulated system-level inputs to trigger application events without moving the physical mouse cursor. The project covers extensiv

Big Capital is a cloud accounting management system designed to track assets, liabilities, and equity through a digital ledger. It provides a multi-tenant organizational framework that supports multi-branch tracking and regional currency settings. The system distinguishes itself through integrated bank feed management, utilizing secure token exchanges and webhook processing for automated transaction synchronization and rule-based categorization. It also features a multi-currency ledger that handles base currency conversions and specific currency codes. The platform covers comprehensive finan

fswatch is a cross-platform file change monitor that watches files and directories for modifications using the native event API of each operating system. It functions as a multi-backend file watcher library that selects from platform-specific backends such as inotify, kqueue, and FSEvents, with a polling fallback when no native API is available. The tool groups multiple file changes into a single event batch and triggers one command per batch, while also executing user-specified commands each time monitored files or directories are modified. The project applies include, exclude, event-type, a

HP-Socket is a networking library for building scalable TCP, UDP, and HTTP servers and clients with event-driven I/O and SSL encryption. It provides a high-performance TCP server framework, an HTTP request handler that parses incoming requests and generates responses, and a UDP communication library for low-latency data transfer, all with optional SSL encryption for secure communication. The library is built on a completion-port-based I/O architecture that uses Windows I/O Completion Ports for scalable asynchronous socket operations. It features a connection-pooled agent architecture for mana

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

Walk is a comprehensive framework for building native Windows desktop applications. It functions as a GUI library and Windows API wrapper, providing a toolkit of native widgets and a declarative layout system for developing high-performance user interfaces. The project is distinguished by its data-binding framework, which uses reflection and string-based property paths to synchronize data sources with interface widgets. It also provides specialized support for high-DPI interface scaling and an optimized native message loop to reduce runtime overhead. The toolkit covers a wide range of capabi

Goa is a design-first Go framework that generates server and client code, documentation, and request validation from a single declarative domain-specific language (DSL). At its core, it provides a Go DSL for defining API endpoints, data types, and error models, which compiles into fully functional HTTP and gRPC server stubs, client packages, and OpenAPI specifications. The framework distinguishes itself through its plugin-extensible code generation pipeline, allowing custom code generation steps, middleware, or transport layers to be added via plugins. It supports multiple transport protocols

qqbot is a bot framework designed for building automated conversational agents and plugins using the SmartQQ client. It provides a conversational bot SDK for processing messages, managing group memberships, and executing event callbacks. The project is distinguished by its use of a headless browser automator to handle account logins and session management. It also includes an IRC chat bridge that functions as a gateway to forward conversations between a local IRC server and the messaging platform. The framework covers a wide range of capabilities, including dynamic plugin management, time-ba