Flexprice vs FOSSBilling
Flexprice
flexprice.ioFOSSBilling
fossbilling.orgSide by side
| Figure | Flexprice | FOSSBilling |
|---|---|---|
| Price from | $199/mo | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | Yes | Yes |
| Web | Yes | Yes |
| Linux | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 6 | 2 |
| Spec score · Subscription Billing Software | 9.1 (#2) | 8.6 (#12) |
| License | The core repository is AGPLv3 open source, while a small Enterprise Edition portion is under a commercial license. | The GitHub license file releases the application under Apache License 2.0 and notes inherited BoxBilling code. |
| Notable news | Flexprice's blog lists a July 15, 2026 launch post introducing a Prompt to Plan feature. | The official demo news page dated 18 October 2026 says the project is seeking donations for sustainability. |
| Self-hosting | Documentation covers self-hosting the backend, AWS deployment and frontend hosting, while the commercial plans also advertise VPC and on-premise options. | FOSSBilling is self-hosted, so the operator keeps the data and controls infrastructure, backups, and security policies. |
| Support | Support channels include email, a community Slack workspace and plan-specific response-time commitments. | The project points users to its documentation, community Discord, and email address for assistance. |
| What it does | Flexprice provides usage metering, billing and feature-management infrastructure for AI and SaaS products. | FOSSBilling is a billing and client-management system for hosting providers and digital-service businesses. |
Plans
Flexprice
- FreeFree
- Build$500 a month
- Scale$1,000 a month
- Mission CriticalPriced on request
- Pay as you go$199 a month
- Enterprise$3,000 a month
In their own words
FOSSBilling
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, handle recurring or one-time pricing, support multiple currencies and apply promo codes. Hosting products can create and manage accounts through cPanel/WHM, DirectAdmin, HestiaCP, CWP and Plesk. Domain functions cover registration, renewal, transfers and WHOIS checks through registrar integrations, though domain prices are entered manually rather than retrieved live. A REST API provides admin, authenticated-client and public guest endpoints. Documented protections include HTTPS enforcement, session fingerprinting, CSRF protection, rate limiting, IP blocking, CAPTCHA and activity logs. It is self-hosted, requiring PHP 8.3, 8.4 or 8.5 and a MySQL-compatible database, with Apache, LiteSpeed/OpenLiteSpeed or NGINX. The project is beta, under active development, and notes rough edges and limited support.