{"data":{"slug":"fossbilling","name":"FOSSBilling","tagline":"Apache-2.0 billing and client management for hosts","category":"payments","categoryName":"Payments","url":"https://fossbilling.org","github":"https://github.com/FOSSBilling/FOSSBilling","pricing":"open-source","hook":"FOSSBilling is a free billing and client management system for online service businesses: automated invoices and reminders, a client area, payment gateways and provisioning for hosting-style products.","whatsGood":"Apache-2.0 (FOSSBilling/FOSSBilling), release 0.8.8 (2026-10-03), with commits landing daily. Popular with web hosting providers, but it also covers software licensing, digital downloads and subscriptions. Extension-friendly architecture for integrations. ★~1.7k.","theCatch":"The README says it is beta, with rough edges and limited support. It is PHP and aimed at the WHMCS-style hosting market, so it is not a general SaaS billing engine.","verdict":"The free WHMCS alternative to try if you sell hosting or similar services.","addedAt":"2026-10-18","featured":false,"domain":"Payments","subSpecialty":"Payments","subcategory":"Payments","tags":["self-host","permissive","payments","active"],"capabilities":[],"surfaces":["Self-host"],"ecosystem":["Multi-platform"],"licenseModel":"Apache-2.0","githubStars":1718,"starsPerWeek":7,"access":"free","archived":false,"repo":{"createdAt":"2022-05-18","pushedAt":"2026-10-18","license":"Apache-2.0","archived":false,"checkedAt":"2026-10-19"}},"related":[{"slug":"stripe-cli","name":"Stripe CLI","tagline":"Official Stripe terminal for webhooks, events, and API objects"},{"slug":"polar","name":"Polar","tagline":"Apache-2.0 merchant-of-record billing for indie and AI products"},{"slug":"hyperswitch","name":"Hyperswitch","tagline":"Apache-2.0 payment orchestrator you can self-host"},{"slug":"killbill","name":"Kill Bill","tagline":"Apache-2.0 in-house subscriptions and payments, no % take-rate"},{"slug":"lago","name":"Lago","tagline":"AGPLv3 usage and entitlements metering you self-host"}],"links":{"self":"/api/gems/fossbilling","html":"/gems/fossbilling","markdown":"/gems/fossbilling.md","category":"/api/gems?category=payments","categoryPage":"/stacks/payments"}}