FluxBilling vs HostBill
HostBill is a PHP biller with a wide module catalogue, priced by edition and by module. FluxBilling is a React 18 platform where billing, DCIM and IPAM ship together and plans start at €4.95/mo with every payment gateway included. This page compares packaging, architecture and what each approach costs to run.
- Status
- Founded 2025
- Pricing
- €4.95 – €25/mo, flat per tier
- Stack
- React 18 SPA, Bun + Express, PostgreSQL
- Tenancy
- K3s pod + isolated database per tenant
- Plugins
- Visual flows stored as JSON in the database
- Status
- Established
- Pricing
- Editions + modules priced separately
- Stack
- PHP web application
- Tenancy
- Single-tenant install
- Plugins
- PHP modules from a broad catalogue
FluxBilling and HostBill both target hosting providers that need billing plus automation, and the difference shows up in how each one is packaged. HostBill is a PHP application with a very broad module catalogue, where editions and individual modules are priced separately, so the final cost depends on which pieces you assemble. FluxBilling ships one flat plan per tier: billing, invoicing and dunning, multi-currency, EU VAT with reverse-charge and OSS, a reseller portal, usage-based metering, DCIM with racks and U-positions, IPv4 and IPv6 IPAM, power and PDU monitoring, every payment gateway, and the visual plugin builder are all included. Plans run €4.95/mo for Lite to €25/mo for Business, with white-label at €25/mo on any tier and self-hosting a €50 one-time add-on. Tiers differ by client count, bare-metal capacity and support response, not by features.
FluxBilling and HostBill, feature by feature.
Read the packaging block first. Most of the practical difference between these two products is decided there, before a single feature row.
| Capability | FluxBilling | HostBill |
|---|---|---|
| Packaging | ||
| How features are sold | One flat plan per tier, all features | Editions plus separately priced modules |
| What changes between tiers | Client count, bare-metal capacity, support response | see vendor docs |
| Payment gateways | All included, every tier | see vendor docs |
| DCIM and IPAM | Included, every tier | see vendor docs |
| White-label | +€25/mo, available on every tier | see vendor docs |
| Cost predictability | Fixed monthly price per tier | Depends on the modules selected |
| Architecture | ||
| Admin + client interface | React 18 single-page app | PHP web application |
| Backend runtime | Bun + Express | PHP |
| Database | PostgreSQL | see vendor docs |
| Tenancy model | K3s pod + isolated database per tenant | Single-tenant install |
| Deployment | Hosted; self-host +€50 one-time | see vendor docs |
| Billing | ||
| Recurring invoicing, retries, dunning | ✓ | ✓ |
| Multi-currency | ✓ | ✓ |
| EU VAT: reverse-charge + OSS | ✓ | see vendor docs |
| Usage-based metering | ✓ | see vendor docs |
| Reseller portal | ✓ | see vendor docs |
| Client portal + support tickets | ✓ | ✓ |
| Infrastructure & DCIM | ||
| DCIM: racks, U-positions, cabling | ✓ | see vendor docs |
| IPAM (IPv4 + IPv6) | ✓ | see vendor docs |
| Power & PDU monitoring | ✓ | see vendor docs |
| Bare-metal capacity | 5 to 75 servers by tier, +€0.50/server/mo beyond | see vendor docs |
| Hypervisor / panel integrations | Proxmox VE, OpenStack, CloudStack, VirtFusion, Virtualizor, SolusVM 2, Pterodactyl, cPanel / WHM — free marketplace plugins | Broad module catalogue |
| Planned, not shipped | Plesk | see vendor docs |
| Plugin model | ||
| Integration format | Visual flows stored as JSON in the database | PHP modules on the filesystem |
| Visual flow builder | ✓ | — |
| Shipping an integration change | Edit and save in the admin UI | Install or update a module |
| One plugin shape across domains | payments, infrastructure, notifications | Separate module types per domain |
| Notification integrations | Telegram plugin | see vendor docs |
| WHMCS importer | Core: read-only against WHMCS | see vendor docs |
| AI Migration | Any MySQL, PostgreSQL, CSV or JSON source, imported on approval | see vendor docs |
| Security & data | ||
| Encryption for stored settings and credentials | AES-256-GCM | see vendor docs |
| Isolated database per tenant | ✓ | — single install |
| Commercial terms | ||
| Entry price | €4.95/mo (Lite, 10 clients, 5 bare metal) | see vendor docs |
| Mid tier | €14.99/mo (Professional, 250 clients, 50 bare metal) | see vendor docs |
| Top published tier | €25/mo (Business, unlimited clients, 75 bare metal) | see vendor docs |
| Extra bare-metal capacity | +€0.50/server/mo | see vendor docs |
| Refund window | 14 days, cancel any time | see vendor docs |
| Trial period | — none; 14-day refund instead | see vendor docs |
HostBill column reflects publicly available vendor documentation as of July 2026. Verify current details at hostbillapp.com.
Catalogue breadth. HostBill has accumulated modules for a very large number of panels, providers, registrars and gateways, and if your operation depends on a specific one of them, buying that module is a solved problem today. FluxBilling installs Proxmox VE, OpenStack, CloudStack, VirtFusion, Virtualizor, SolusVM 2, Pterodactyl and cPanel / WHM from the marketplace, with Plesk planned rather than shipped. A visual flow can usually reproduce an integration, but “usually” is not the same as “already installed”.
Track record is the other one. HostBill has years of production deployments behind it; FluxBilling is a young product, founded in 2025. If you need a mature platform with a deep integration bench right now, that is a fair reason to stay. The flat-plan argument only pays off if you were going to buy several modules anyway — when the assembled stack costs more than a fixed tier that already contains DCIM, IPAM, metering and every gateway.
Looking at this the other way round? The HostBill alternative page covers the migration path, what carries over, and where FluxBilling does not fit.
FluxBilling vs HostBill, answered directly.
01.What is the main difference between FluxBilling and HostBill?
How the product is packaged, and what it is built on. HostBill is a PHP application with a very broad module catalogue where editions and individual modules are priced separately, so the final bill depends on which pieces you assemble. FluxBilling ships one flat plan per tier with billing, DCIM, IPAM, metering, the reseller portal, every payment gateway and the visual plugin builder included; tiers differ by client count, bare-metal capacity and support response rather than by feature.
02.How much does FluxBilling cost compared to HostBill?
FluxBilling is €4.95/mo for Lite (10 clients, 5 bare-metal servers), €9.99 for Starter (150 clients, 25 servers), €14.99 for Professional (250 clients, 50 servers) and €25 for Business (unlimited clients, 75 servers). Extra bare-metal capacity is €0.50 per server per month, white-label is €25/mo on any tier and self-hosting is a €50 one-time add-on. HostBill publishes its editions and module prices on its own site; compare the assembled total against the flat tier.
03.Does FluxBilling have as many integrations as HostBill?
No, and it is worth being clear about that. HostBill has a much larger module catalogue built over many years. FluxBilling installs Proxmox VE, OpenStack, CloudStack, VirtFusion, Virtualizor, SolusVM 2, Pterodactyl and cPanel / WHM as free marketplace plugins, with Plesk planned rather than shipped. What is different is the build path: integrations are visual flows composed in the admin UI, so filling a gap does not require writing and deploying a PHP module.
04.Is there an enterprise tier?
There is no FluxBilling enterprise plan. The published tiers stop at Business at €25/mo. Beyond roughly 20,000 servers, or where a contracted SLA is required, the arrangement is a custom quote rather than a product tier.
05.Can I move from HostBill to FluxBilling?
Yes. There is no dedicated HostBill importer, but AI Migration in the admin panel reads the HostBill MySQL database without writing to it, proposes how clients, products, services, invoices and payments map across, shows a read-only preview and imports once a super admin approves. Tickets and module settings stay behind. Send your record counts and the modules you rely on if you want the team to plan it with you.
06.Can I try FluxBilling before committing to a plan?
There is no trial licence and no scheduled demo call. A public live demo of both the admin and the client panel is open at demo.fluxbilling.app with no signup — a shared sandbox that resets every 10 minutes. Every plan carries a 14-day refund window and can be cancelled at any time, so evaluation happens in a real instance with your own data.
List the modules you pay for. We price the flat equivalent.
Send your client count, server count and the modules currently on your licence. You get the tier that fits, a migration plan, and a straight answer on anything that has no equivalent yet. Plans start at €4.95/mo, with a 14-day refund and no minimum term.
HostBill is a trademark of its respective owner. FluxBilling is not affiliated with, endorsed by, or sponsored by the owner of the HostBill trademark. This comparison reflects publicly available documentation and pricing as of July 2026 and may not reflect the most current state. Verify all details with the respective vendors before purchasing.