Open Source Alternatives to WHMCS

A web hosting billing and automation platform designed for hosting businesses to manage daily operations. The software automates invoicing, payment collection, tax calculation, and reminders. It integrates with web hosting control panels and domain registrars to provide automatic provisioning and management of services. The platform includes a client portal with ticketing, a knowledgebase, and downloads for customer support. It is available as a self-hosted solution or as a fully hosted cloud environment with automatic updates and backups. The system provides a modular API and ORM for custom development. This software is used by over 35,000 customers across 200 countries to scale their hosting operations. It is deployed either on the user's own server or through a managed cloud environment provided by the company.

Whether you want to cut software costs or escape vendor lock-in, these open source alternatives to WHMCS give you an option you fully own. You can self-host them, so your data stays on infrastructure you control. This page lists 2 open source alternatives to WHMCS. The most popular are Paymenter and FOSSBilling. Most use the Apache-2.0 or MIT license, and 2 offer an official Docker image.