Open-source alternatives to Stripe Php

Lago is an open-source billing platform designed for managing subscriptions, usage-based metering, and automated invoicing. It functions as a comprehensive system for defining pricing plans, tracking real-time consumption via a metering engine, and controlling feature entitlements based on active customer subscriptions. The platform differentiates itself through a dynamic billing engine that supports hybrid pricing models and a credit-based wallet system for managing prepaid funds. It includes specialized tools for multi-tenant entitlement mapping, allowing operators to tie specific product p

This project is a multi-gateway payment SDK that provides a unified API and abstraction layer for integrating multiple payment providers. It maps high-level payment operations to provider-specific API calls and standardizes diverse outputs through a unified response normalization system. The SDK supports multi-tenant configuration, allowing a single runtime instance to isolate credentials and settings for different business accounts. It features a plugin-based architecture that enables the addition of custom payment gateways through abstract class implementations. The capability surface cove

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

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

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

This project is a software-as-a-service application boilerplate and foundation designed to provide the core business infrastructure for building software services. It functions as a multi-tenant user management system that handles account creation, user authentication, and organizational team structures across multiple customer accounts. The kit integrates enterprise identity features, including a service for automating user and group management via the System for Cross-domain Identity Management standard. It also includes a billing implementation for managing recurring payments, one-time tra

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

Invoice Ninja is a professional billing and invoicing platform designed for managing clients, projects, and financial records. It serves as a multi-currency billing system and time tracker available as both a cloud-based application and a self-hosted suite. The platform distinguishes itself through comprehensive support for regional taxes, diverse currency formats, and automated exchange rate updates. It includes dedicated cross-platform mobile and desktop applications to manage business data across different operating systems. The software covers the end-to-end financial lifecycle, includin

CRMEB is a comprehensive e-commerce platform built on ThinkPHP 6, designed as a headless system that delivers standardized APIs to various frontend clients. It provides a unified backend to synchronize product catalogs, orders, and customer data across web browsers, mobile applications, and mini-programs. The platform supports diverse commerce models, including multi-vendor marketplaces where independent merchants manage their own stores, centralized chain store networks, and social commerce frameworks featuring affiliate distribution and community group buying. It also integrates specialized

WooCommerce is a comprehensive eCommerce framework for WordPress that transforms websites into fully functional online stores for physical and digital goods. It serves as a digital storefront manager for product catalogs, inventory, and customer orders across retail and wholesale business models. The system functions as a payment gateway integrator, connecting shops to diverse processors for credit cards, digital wallets, and subscriptions. It also operates as an order fulfillment system for calculating shipping rates, generating labels, and coordinating delivery via third-party couriers, whi

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

aimeos-laravel is a comprehensive e-commerce framework for building online stores and B2B marketplaces using the Laravel PHP framework. It functions as a digital storefront engine and multi-tenant e-commerce platform, providing the core logic for managing product catalogs, shopping baskets, and payment processing. The project is distinguished by its ability to support complex business models, including multi-vendor marketplaces and professional B2B commerce suites with tiered pricing and procurement workflows. It also provides a headless commerce API, allowing store data and business logic to

Apollo Universal Starter Kit is a full-stack application boilerplate and starter template designed to accelerate cross-platform development across web, mobile, and server environments. It provides a modular architecture that organizes code into independent, self-contained feature directories, combined with a GraphQL-driven data layer and a server-side rendering pipeline to optimize performance and search engine optimization. The project incorporates compile-time code generation tooling to automatically scaffold schemas, resolvers, and components, alongside a real-time subscription engine for

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

GitHub Copilot is an AI-powered development platform designed to integrate large language models directly into coding environments. It functions as an interactive assistant and an agentic workflow orchestrator, enabling developers to automate code generation, perform automated code reviews, and execute complex, multi-step development tasks through natural language prompts. The platform distinguishes itself through its autonomous agent capabilities, which allow for repository-level research, implementation planning, and code modifications across multiple files. It supports a modular architectu

This project is a foundational boilerplate for building software-as-a-service applications using Next.js, TypeScript, and Tailwind CSS. It provides a pre-configured project structure designed to accelerate the launch of a product. The kit integrates a conversational user interface that renders markdown responses from large language models. It includes a secure identity layer for user registration and session persistence across multiple authentication providers, alongside a billing system for managing tiered pricing plans and real-time payment updates. The technical surface covers a type-safe

Builderbook is a MERN stack digital bookstore and documentation platform designed for selling and delivering digital books. It functions as a content delivery site that transforms markdown files hosted in Git repositories into structured online books. The platform distinguishes itself by synchronizing markdown content from remote repositories into a database to enable metadata-driven access control and content gating. It integrates payment processing to restrict full content access based on verified purchase history, while providing public previews. The system covers a broad range of capabil

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

This project is a Go language library and API SDK designed for integrating with the WeChat ecosystem. It provides a programmatic interface to manage official accounts, mini programs, and enterprise platform features. The SDK features an interface-based client design that abstracts various API categories into specialized objects. It includes a dedicated OAuth 2.0 authorization client to manage access tokens, authentication tickets, and third-party authorization flows, alongside a pluggable token caching system to share credentials across different environments. The library covers broad capabi

EverShop is a TypeScript-first, modular e-commerce platform built with GraphQL and React. It provides a full-featured online store system for managing products, orders, customers, and site content through a React-based administrative interface, with a GraphQL API layer that serves both the admin panel and storefront. The platform is designed around a module-based extension architecture, where core functionality is split into independent modules that can be added, removed, or overridden without modifying the core codebase. Storefront appearance and behavior are controlled through a theme syste

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

Wdc-saas-starter-kit is a full-stack Next.js and TypeScript web application boilerplate designed to launch subscription-based software products. It comes pre-configured with a relational database ORM layer, user authentication, role-based access control, and cloud object storage integrations for handling user-uploaded files and media. The starter kit features recurring subscription management and payment webhook processing through an integrated payment gateway to synchronize customer billing cycles, plan upgrades, and subscription statuses. It also includes multi-tenant team workspace archit

Ever Gauzy is an integrated business management suite providing an ERP and CRM framework for professional services automation. It functions as a multi-tenant SaaS platform that combines time tracking, billing, and human resource management into a unified system. The project is distinguished by its headless architecture, utilizing a REST and GraphQL API gateway to expose business operations. It features a Model Context Protocol server that allows AI assistants to interact with system data and execute functional tools for automated business workflows. The platform covers a broad operational su

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 is the template I use to start new full-stack projects.

Taxonomy is a full-stack application template and reference implementation built with the Next.js app router. It serves as a comprehensive starter for developing web applications using server components and modern React patterns. The project integrates a variety of specialized systems, including an identity management workflow for OAuth and session handling, and a billing system for managing recurring subscriptions and payment events. It also features a content pipeline that transforms Markdown and JSX files into type-safe data collections for rendering blogs and documentation. The architect

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