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FOSSBilling
What it is
FOSSBilling is free, open-source billing and client-management software for hosting and other online service businesses. It can issue invoices automatically, send payment reminders, support recurring and one-time pricing, handle multiple currencies, and apply promo codes. Hosting products can provision and manage accounts through control panels including cPanel/WHM, DirectAdmin, HestiaCP, CWP, and Plesk. Domain tools support registration, renewal, transfers, and WHOIS availability checks through registrar integrations, but domain prices must be set manually rather than retrieved live. A REST API includes admin, authenticated-client, and public guest endpoints. Documented protections include HTTPS enforcement, session fingerprinting, CSRF protection, rate limiting, IP blocking, CAPTCHA, and activity logs. The software is self-hosted and requires PHP 8.3, 8.4, or 8.5 and a MySQL-compatible database; supported web servers include Apache, LiteSpeed/OpenLiteSpeed, and NGINX. The project describes it as beta and under active development, with rough edges and limited support. Existing control-panel accounts cannot be imported, and clients do not have single sign-on to control panels. Multi-factor authentication is planned, not currently available. The code is licensed under AGPL 3.0.
For and against
For
- Automates invoices and payment reminders.
- Supports multiple currencies and recurring or one-time pricing.
- Provisions hosting accounts through several control panels.
- Provides a REST API and documented security protections.
Against
- Existing control-panel accounts cannot be imported.
- Clients lack single sign-on to control panels.
- Domain prices require manual entry.
- Multi-factor authentication is not currently available.
The verdict
FOSSBilling brings billing and client management together with hosting and domain tools for self-hosted use. Its beta status, setup requirements, and listed account-management gaps merit consideration before adoption.
Who it suits
FOSSBilling suits self-hosting and other online service businesses that need billing, client management, and supported hosting-account provisioning. It is a better fit for users prepared to work with beta software and its listed hosting requirements.
Plans and prices
FOSSBilling core
free and open source · self-hosted
Read 21 Oct 2026 · docs.fossbilling.org
FOSSBilling
Core software is free and open source
Read 9 Oct 2026 · docs.fossbilling.org
On the record
- Anti-spam
- The antispam module supports reCAPTCHA v2/v3, Cloudflare Turnstile, hCaptcha, Stop Forum Spam, disposable-email blocking, and IP blocking.docs.fossbilling.org · read 21 Oct 2026
- API
- FOSSBilling provides a REST API with admin, authenticated-client, and public guest endpoints.docs.fossbilling.org · read 9 Oct 2026
- API authentication
- Authenticated API calls use HTTP Basic Authentication with an admin or client username and API key.docs.fossbilling.org · read 21 Oct 2026
- Automated billing
- It generates invoices, sends payment reminders, and supports recurring and one-time charges.fossbilling.org · read 21 Oct 2026
- Billing
- It supports automatic invoices, payment reminders, multiple currencies, recurring and one-time pricing, and promo codes.docs.fossbilling.org · read 9 Oct 2026
- Developer wrapper
- A bundled JavaScript API wrapper handles CSRF tokens, response parsing, forms, links, and loading indicators.docs.fossbilling.org · read 21 Oct 2026
- Domain limitation
- Domain prices are set manually per TLD; FOSSBilling does not retrieve live registrar pricing.docs.fossbilling.org · read 9 Oct 2026
- Domain limits
- Domain pricing is manually set per TLD, live registrar pricing is not pulled automatically, and DNS management is under consideration.docs.fossbilling.org · read 21 Oct 2026
- Domain management
- Domain workflows include registration, renewal, transfer, nameserver changes, contact updates, locking, and privacy controls.docs.fossbilling.org · read 21 Oct 2026
- Extensibility
- Themes, modules, payment gateways, server managers, and domain registrars can be installed through the extension architecture.docs.fossbilling.org · read 21 Oct 2026
- Homepage license statement
- The homepage currently describes the project as AGPL 3.0 licensed, creating a discrepancy with the repository license file.fossbilling.org · read 21 Oct 2026
- Hosting limitations
- Existing control-panel accounts cannot be imported, and clients do not have single sign-on to control panels.docs.fossbilling.org · read 9 Oct 2026
- Hosting limits
- Hosting documentation says account imports and single sign-on are unavailable, and Plesk has a minor package-sync bug.docs.fossbilling.org · read 21 Oct 2026
- Hosting provisioning
- Hosting accounts can be provisioned through cPanel/WHM, Plesk, DirectAdmin, HestiaCP, and CWP.docs.fossbilling.org · read 21 Oct 2026
- Hosting requirements
- FOSSBilling requires PHP 8.3, 8.4, or 8.5 and a MySQL-compatible database, and supports Apache, LiteSpeed/OpenLiteSpeed, and NGINX.docs.fossbilling.org · read 9 Oct 2026
- Independent integration note
- Netim describes its FOSSBilling module as supporting registration, transfers, renewals, registrar lock, WHOIS privacy, authorization codes, contact updates, and nameserver changes.support.netim.com · read 21 Oct 2026
- Latest release
- Version 0.8.8 was released on 3 October 2026, is 29 MB, and requires PHP 8.3 or newer.fossbilling.org · read 21 Oct 2026
- License
- The GitHub license file releases the application under Apache License 2.0 and notes inherited BoxBilling code.github.com · read 21 Oct 2026
