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Paymenter

Free plan Open source APILinuxSelf-hostedWeb

What Paymenter is

Paymenter is an open-source billing platform for hosting companies, with automated billing and service deployment. It offers custom themes and marketplace extensions, a REST API for managing the platform and automating workflows, and multi-currency billing. Built-in payment gateway extensions include Mollie, PayPal, and Stripe. Server extensions include cPanel, Convoy, DirectAdmin, Enhance, Plesk, Pterodactyl, VirtFusion, and Virtualizor; Proxmox is available only as a paid extension. Paymenter includes customer support tickets, with replies supported through email piping. Its WHMCS importer can transfer currencies, users, admins, categories, products, tickets, orders, services, cancellations, invoices, and payments. The self-hosted software is free under the MIT License. A hosted PaaS plan costs €5 a month and describes free daily backups and Cloudflare DDoS protection. Self-hosted installation supports listed Ubuntu, CentOS, and Debian versions, but not Windows. The installation guide warns that losing the APP_KEY makes encrypted data, including user passwords, irrecoverable.

Who it suits

Paymenter suits hosting companies that need billing, service deployment, support tickets, and integrations with listed payment gateways or server platforms. It offers both a free self-hosted option and a paid hosted plan.

What it does well

Free open-source plan under the MIT License.
Automates billing and service deployment.
REST API supports workflow automation.
WHMCS importer transfers a broad range of records.
Supports multi-currency billing.

What to know first

Proxmox integration is a paid extension.
Windows is unsupported for self-hosted installation.
Losing the APP_KEY makes encrypted data irrecoverable.

Limits

Self-hosted installation supports the listed Ubuntu, CentOS, and Debian versions; Windows is unsupported. Proxmox is available only as a paid extension. Losing the APP_KEY makes encrypted data such as user passwords irrecoverable.

Plans

Plan	Billed and limits	Price
Paymenter	Open-source billing platform; MIT license	Free
Paymenter PaaS	Monthly · Unlimited resources · managed hosting	€5 a month
PaaS	Monthly paid at just €5,- · Unlimited Resources!	€5 a month

As paymenter.org lists them, read 9 Oct 2026. The maker's own page has the final word.

Getting started

Open the Paymenter website.
Choose the free open-source software or hosted PaaS for €5 a month.
For self-hosting, use a listed Ubuntu, CentOS, or Debian version.
Follow the installation guide and preserve the APP_KEY.
Configure the payment gateway and server extensions you need.

Verdict

Paymenter combines billing, deployment, support tickets, and hosting integrations in an open-source platform. Check the supported operating systems and take care to preserve the APP_KEY when self-hosting.

Questions

What does Paymenter cost?

The open-source Paymenter plan is free. Its hosted PaaS plan is €5 a month.

Is there a free plan?

Yes. Paymenter is available as free open-source software under the MIT License.

Which operating systems can I use for self-hosting?

The installation guide lists Ubuntu 24.04 and 22.04, CentOS 9 and 8, and Debian 13, 12, and 11. Windows is unsupported.

Which payment gateways and server integrations are built in?

Gateway extensions include Mollie, PayPal, and Stripe. Server extensions include cPanel, Convoy, DirectAdmin, Enhance, Plesk, Pterodactyl, VirtFusion, and Virtualizor; Proxmox is paid.

Can Paymenter import data from WHMCS?

Yes. Its importer can transfer currencies, users, admins, categories, products, tickets, orders, services, cancellations, invoices, and payments.

Who maintains Paymenter, and what happens if I lose the APP_KEY?

Paymenter says it is built and maintained by developers from around the world. The APP_KEY encrypts data such as user passwords, and losing it makes encrypted data irrecoverable.

Facts from Paymenter's own pages

Affiliate tracking: The product site lists affiliate tracking and rewards as a built-in feature. · paymenter.org, 21 Oct 2026
Announcements: The product site describes a built-in blog system for publishing customer announcements. · paymenter.org, 21 Oct 2026
API: Paymenter provides a REST API to control the platform and automate workflows. · paymenter.org, 9 Oct 2026
API client libraries: The API reference offers client selections for Shell, Ruby, Node.js, PHP, and Python. · paymenter.org, 21 Oct 2026
API compatibility: The API documentation says it requires Paymenter v1.2.0 or higher and identifies the specification as OpenAPI 3.1.0. · paymenter.org, 21 Oct 2026
Automation: The platform supports automated billing and service deployment. · paymenter.org, 9 Oct 2026
Company founded: Paymenter’s LinkedIn profile lists its founding year as 2022. · linkedin.com, 21 Oct 2026
Company headquarters and size: LinkedIn lists the headquarters as Nederland and the company size as 2–10 employees. · linkedin.com, 21 Oct 2026
Company legal name and funding: The opened LinkedIn and Crunchbase profiles identify the organization as Paymenter but do not state a legal entity name or a specific funding total. · crunchbase.com, 21 Oct 2026
Configurable options: Customers can customize a product through configurable options, including options that add charges. · paymenter.org, 21 Oct 2026
Customer support tickets: Paymenter includes a ticketing feature for handling customer support requests. · paymenter.org, 21 Oct 2026
Customization: Paymenter supports custom themes and extensions from its marketplace. · paymenter.org, 9 Oct 2026
Developer extensions: Developer documentation covers server and gateway extensions, configuration, and event hooks. · paymenter.org, 21 Oct 2026
Documentation coverage: The documentation includes installation, updating, products, server integrations, payment gateways, tickets, single sign-on, WHMCS import, CLI, and FAQs. · paymenter.org, 21 Oct 2026
Hosted service: Paymenter PaaS describes its hosted service as managed and says it includes daily backups and Cloudflare DDoS protection. · paas.paymenter.org, 21 Oct 2026
Hosting: Paymenter PaaS describes its hosted instance as including free daily backups and Cloudflare DDoS protection. · paas.paymenter.org, 9 Oct 2026
License: The project is released under the MIT License. · github.com, 21 Oct 2026
Limit: invoice and provisioning reliability: A Trustpilot reviewer reports occasional invoice problems and cases where a service was not extended after payment. · trustpilot.com, 21 Oct 2026
Limit: open bug reports: The project issue tracker includes reports about a Pterodactyl 2.0 integration failure, service cancellation affecting other invoice items, and late payments activating services without provisioning them. · github.com, 21 Oct 2026
Limit: support: Some Trustpilot reviewers complain about slow or inadequate support and say they were muted or banned in the community Discord. · trustpilot.com, 21 Oct 2026
Migration: The WHMCS importer can transfer currencies, users, admins, categories, products, tickets, orders, services, cancellations, invoices, and payments. · paymenter.org, 9 Oct 2026
Multi-currency: The product site says Paymenter supports multiple currencies and automatic currency conversion and rates. · paymenter.org, 21 Oct 2026
Multi-language: The product site says Paymenter supports multiple languages through built-in translation. · paymenter.org, 21 Oct 2026
Payment gateways: The extensions repository lists Mollie, Xendit, PayPal, and Stripe among the gateways included with the installation. · github.com, 21 Oct 2026

Where Paymenter stands on Freedom251

Subscription Billing Software#6 of 49