FOSSBilling vs Paymenter vs SolidInvoice: Self-Hosted Hosting Billing & Subscription Management 2026

Why Self-Host Your Billing Platform?

Running a hosting company, SaaS business, or digital service requires a reliable billing engine. Commercial solutions like WHMCS, Blesta, or Chargebee work well, but they come with recurring licensing fees, vendor lock-in, and limited customization. Self-hosted billing platforms give you full control over your invoicing pipeline, payment gateway integrations, client portal, and subscription lifecycle — without per-seat or revenue-share pricing.

This guide compares three mature open-source billing platforms designed for self-hosted deployment: FOSSBilling (the community fork of BoxBilling), Paymenter (modern hosting billing with a clean UI), and SolidInvoice (elegant invoicing with quote management). Each targets a slightly different use case, from web hosting automation to general subscription billing.

For personal finance tracking, see our Maybe Finance vs Firefly III comparison. If you need open-source billing for usage-based pricing models, our Lago vs Kill Bill guide covers those alternatives. For e-commerce integration, check our Medusa vs Saleor vs Vendure comparison.

Quick Comparison Table

FOSSBilling: The BoxBilling Successor

FOSSBilling emerged in 2022 as the community-maintained successor to BoxBilling, which had been abandoned. It is purpose-built for web hosting providers who need to automate billing, provisioning, and client management in a single platform.

Key strengths:

• Extensive payment gateway support — over 20 payment integrations including Stripe, PayPal, Mollie, 2Checkout, and cryptocurrency processors
• Server provisioning modules — native integrations with cPanel, Plesk, DirectAdmin, and custom API modules for automated service provisioning
• Built-in support ticket system — clients can open tickets linked to their orders and services
• Product configurator — supports configurable options (disk space, bandwidth, addons) with pricing rules
• Affiliate system — built-in referral tracking and commission management
• Active community — regular releases and an active Discord community

Best for: Web hosting providers, VPS resellers, and domain registrars who need automated billing + provisioning.

Docker Compose Deployment

FOSSBilling runs on PHP with MySQL/MariaDB. Here is a production-ready Docker Compose configuration:

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version: "3.8"
services:
  fossbilling:
    image: ghcr.io/fossbilling/fossbilling:latest
    restart: unless-stopped
    ports:
      - "8080:80"
    environment:
      - DB_HOST=db
      - DB_NAME=fossbilling
      - DB_USER=fossbilling
      - DB_PASSWORD=change_this_password
    volumes:
      - fossbilling-data:/var/www/html
    depends_on:
      db:
        condition: service_healthy

  db:
    image: mariadb:11
    restart: unless-stopped
    environment:
      - MYSQL_ROOT_PASSWORD=root_change_this
      - MYSQL_DATABASE=fossbilling
      - MYSQL_USER=fossbilling
      - MYSQL_PASSWORD=change_this_password
    volumes:
      - db-data:/var/lib/mysql
    healthcheck:
      test: ["CMD", "healthcheck.sh", "--connect", "--innodb_initialized"]
      interval: 10s
      timeout: 5s
      retries: 5

volumes:
  fossbilling-data:
  db-data:

After the containers start, navigate to http://localhost:8080 to run the web installer. Configure your payment gateways, server modules, and product catalog through the admin panel.

Paymenter: Modern Hosting Billing

Paymenter is a newer entrant built on Laravel, offering a modern and responsive interface for hosting billing. It focuses on simplicity and ease of use while maintaining the features hosting providers need.

Key strengths:

• Clean, modern UI — built with Laravel and a responsive frontend, significantly more polished than older PHP billing systems
• Pterodactyl Panel integration — first-class support for Pterodactyl game server provisioning, making it popular with game hosting providers
• Stripe and PayPal integration — straightforward payment processing setup
• Subscription management — handles recurring billing, suspension, and termination workflows
• Extensible module system — Laravel-based architecture makes it easy to build custom extensions
• Lightweight — fewer dependencies than FOSSBilling, faster initial setup

Best for: Game server hosting providers, small-to-medium hosting companies, and teams that value a modern interface over feature depth.

Docker Compose Deployment

Paymenter uses Laravel with MySQL and Redis for caching:

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version: "3.8"
services:
  paymenter:
    image: ghcr.io/paymenter/paymenter:latest
    restart: unless-stopped
    ports:
      - "8080:80"
    environment:
      - APP_URL=http://localhost:8080
      - DB_CONNECTION=mysql
      - DB_HOST=db
      - DB_PORT=3306
      - DB_DATABASE=paymenter
      - DB_USERNAME=paymenter
      - DB_PASSWORD=change_this_password
      - REDIS_HOST=redis
    volumes:
      - paymenter-data:/var/www/html
    depends_on:
      db:
        condition: service_healthy
      redis:
        condition: service_started

  db:
    image: mariadb:11
    restart: unless-stopped
    environment:
      - MYSQL_ROOT_PASSWORD=root_change_this
      - MYSQL_DATABASE=paymenter
      - MYSQL_USER=paymenter
      - MYSQL_PASSWORD=change_this_password
    volumes:
      - db-data:/var/lib/mysql
    healthcheck:
      test: ["CMD", "healthcheck.sh", "--connect", "--innodb_initialized"]
      interval: 10s
      timeout: 5s
      retries: 5

  redis:
    image: redis:7-alpine
    restart: unless-stopped

volumes:
  paymenter-data:
  db-data:

Paymenter also includes a setup wizard for initial configuration. The Pterodactyl integration requires adding your game panel API credentials in the admin settings.

SolidInvoice: Elegant Invoicing and Quotes

SolidInvoice takes a different approach — rather than targeting hosting providers specifically, it is a general-purpose invoicing and quote management platform. It is built on Symfony and focuses on providing a professional invoicing experience for freelancers, agencies, and small businesses.

Key strengths:

• Quote-to-invoice workflow — create professional quotes, convert them to invoices upon client approval
• Expense tracking — track business expenses alongside invoicing for a complete financial picture
• EU VAT compliance — built-in support for EU VAT rules and reverse-charge mechanisms
• Recurring invoices — automatic generation of recurring invoices for subscription services
• Client portal — clients can view quotes, invoices, and make payments through a dedicated portal
• Clean design — professionally designed invoice templates that look polished out of the box
• Payment reconciliation — mark payments as received and reconcile against invoices

Best for: Freelancers, agencies, consultants, and small businesses that need professional invoicing with quote management rather than hosting automation.

Docker Compose Deployment

SolidInvoice runs on Symfony with MySQL:

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version: "3.8"
services:
  solidinvoice:
    image: solidinvoice/solidinvoice:latest
    restart: unless-stopped
    ports:
      - "8080:80"
    environment:
      - DATABASE_DRIVER=pdo_mysql
      - DATABASE_HOST=db
      - DATABASE_PORT=3306
      - DATABASE_NAME=solidinvoice
      - DATABASE_USER=solidinvoice
      - DATABASE_PASSWORD=change_this_password
    volumes:
      - solidinvoice-data:/var/www/html
    depends_on:
      db:
        condition: service_healthy

  db:
    image: mariadb:11
    restart: unless-stopped
    environment:
      - MYSQL_ROOT_PASSWORD=root_change_this
      - MYSQL_DATABASE=solidinvoice
      - MYSQL_USER=solidinvoice
      - MYSQL_PASSWORD=change_this_password
    volumes:
      - db-data:/var/lib/mysql
    healthcheck:
      test: ["CMD", "healthcheck.sh", "--connect", "--innodb_initialized"]
      interval: 10s
      timeout: 5s
      retries: 5

volumes:
  solidinvoice-data:
  db-data:

Feature Deep Dive: Payment Gateway Support

All three platforms support the major payment processors, but the depth of integration varies:

FOSSBilling leads in payment gateway variety with 20+ integrations, including regional processors and cryptocurrency options. Paymenter focuses on Stripe and PayPal for simplicity. SolidInvoice adds GoCardless for SEPA direct debit, making it attractive for European businesses.

Decision Framework

Choose FOSSBilling if:

• You run a web hosting, VPS, or domain registration business
• You need automated server provisioning (cPanel, Plesk, DirectAdmin)
• You want a built-in support ticket system
• You need 20+ payment gateway options

Choose Paymenter if:

• You run a game server hosting business (Pterodactyl integration)
• You prefer a modern, responsive UI
• You want a simpler setup with fewer moving parts
• You use Stripe or PayPal exclusively

Choose SolidInvoice if:

• You are a freelancer, agency, or consultant (not a hosting provider)
• You need a quote-to-invoice workflow
• You need EU VAT compliance
• You want professional invoice templates out of the box

Why Self-Host Your Billing Platform?

Self-hosting your billing engine provides several advantages over SaaS alternatives:

Data ownership and privacy. Your client information, payment history, and business metrics never leave your infrastructure. This matters for GDPR compliance and competitive intelligence — no third-party analytics provider learns about your revenue trends.

Cost predictability. SaaS billing platforms typically charge per-invoice, per-client, or a percentage of revenue. Self-hosted platforms have zero marginal cost per transaction. For a hosting company processing thousands of invoices monthly, the savings compound quickly.

No vendor lock-in. When your billing system is SaaS-based, migrating to a competitor means exporting data, reconfiguring payment gateways, and potentially disrupting client access. Self-hosted platforms let you modify the codebase, add custom integrations, and extend functionality without waiting on a vendor roadmap.

Full customization. Every aspect of the client portal, invoice templates, email notifications, and workflow can be modified. FOSSBilling’s module system, Paymenter’s Laravel architecture, and SolidInvoice’s Symfony bundles all support custom extensions.

For related reading, see our WHMCS alternatives guide for general invoicing tools, and our open-source billing platforms comparison for usage-based pricing models.

FAQ

Is FOSSBilling a replacement for WHMCS?

FOSSBilling covers many of the same use cases as WHMCS — hosting billing, automated provisioning, client management, and support tickets — but it is free and open-source. It lacks some of WHMCS’s advanced features (like complex tax rules and advanced reporting), but for most small-to-medium hosting providers, it is a fully functional alternative.

Can Paymenter handle non-hosting products?

Yes. While Paymenter is optimized for hosting and game server billing, you can sell any product or service through it. The product catalog supports one-time purchases, subscriptions, and configurable options. However, it does not have the quote-to-invoice workflow that SolidInvoice offers.

Does SolidInvoice support automated payment reminders?

Yes. SolidInvoice can send automated payment reminder emails for overdue invoices. You can configure the reminder schedule and customize the email templates. It does not, however, automatically suspend services on non-payment — that is a FOSSBilling and Paymenter feature.

Which platform handles multi-currency billing best?

All three support multi-currency, but FOSSBilling has the most mature implementation with automatic exchange rate updates and per-product currency overrides. Paymenter and SolidInvoice support basic multi-currency invoicing but require manual rate configuration.

Can I migrate from WHMCS to FOSSBilling?

FOSSBilling provides a WHMCS migration module that imports clients, products, invoices, and support tickets. The migration is not one-click — you need to export data from WHMCS and import it through FOSSBilling’s admin panel — but it covers the essential data types needed for a clean transition.

Do these platforms handle subscription proration?

FOSSBilling and Paymenter support subscription management with prorated charges when clients upgrade or downgrade their plans mid-cycle. SolidInvoice supports recurring invoices but does not have built-in proration logic — you would need to manually adjust invoice amounts for mid-cycle changes.