business

Odoo is a comprehensive suite of open source business applications including CRM, Website Builder, eCommerce, Project Management, Accounting, Point of Sale, HR and more. The apps can be used standalone or integrated into a complete ERP system.

Hyperswitch is an open-source payments orchestration platform that provides a single API to access multiple payment service providers, enabling seamless payment processing with comprehensive routing and management capabilities.

ERPNext is a comprehensive, free, and open-source Enterprise Resource Planning (ERP) system that includes CRM, accounting, HR, manufacturing and more. It provides a complete business management solution used by thousands of companies worldwide.

Invoice Ninja is a powerful open-source invoicing, payment, and time-tracking platform that helps businesses manage billing, quotes, projects and expenses with extensive customization options.

Lago is an open-source metering and usage-based billing platform that helps businesses manage complex pricing models, subscriptions, and payments with extensive customization options.

Dolibarr ERP & CRM is a modern open source software package that helps manage business activities like contacts, invoices, orders, stocks, calendar, HR and more. It's designed for small to large companies and can be used standalone or as a web application.

Kill Bill is an open-source subscription billing and payment platform that helps businesses manage complex billing scenarios, subscriptions, and payments with extensive customization options.

InvoicePlane is a self-hosted open source application for managing invoices, clients and payments, offering comprehensive billing and client management features for small businesses.

Corteza is an open source low-code platform that enables building CRM, business process and structured data applications with workflow automation capabilities and extensive integration options.

InvoiceShelf is an open-source invoicing and expense tracking platform that helps businesses create professional invoices, manage expenses, and track payments with comprehensive features.

FOSSBilling is a free open-source billing and client management solution designed for web hosting businesses, offering automated invoicing, payment processing, and comprehensive client management capabilities.

SolidInvoice is an open-source invoicing application designed to help small businesses and freelancers manage billing operations with features like client management, quotes, invoices, and online payments.