Kill Bill vs Paymenter
Kill Bill
killbill.io
Paymenter
paymenter.orgSide by side
| Figure | Kill Bill | Paymenter |
|---|---|---|
| Price from | $9,999/mo | €5/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | Yes | Yes |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 5 | 3 |
| Spec score · Subscription Billing Software | 9.1 (#3) | 8.8 (#8) |
| License | The core Kill Bill project is released under the Apache 2.0 license. | The project is released under the MIT License. |
| Product | Kill Bill is an open-source, programmable billing platform with APIs for pricing models, subscriptions, invoices, and payment gateway integrations. | Paymenter is an open-source billing platform tailored for hosting companies. |
| Public API | Kill Bill exposes REST and JSON over HTTP under /1.0/kb/ for tenants, catalogs, accounts, subscriptions, usage, invoices, payments, tags, custom fields and audit logs. | Paymenter publishes a REST API with endpoints for resources including users, products, orders, services, invoices, tickets, credits, and affiliates. |
| Security | The overview describes encryption at rest and in transit, TLS communications, AES-256 stored-data encryption, audit logs, role-based access controls, and multi-tenant isolation. | The installation guide says the APP_KEY encrypts data such as user passwords and warns that losing it makes encrypted data irrecoverable. |
| Self-hosting | Kill Bill runs on premises, in a private data center or in a customer's cloud account, with billing data kept in the customer's database. | Paymenter can be installed on a self-managed server, and its installation guide lists supported Linux distributions and versions. |
| Support | The self-hosted open-source option includes community support, while paid support tiers are separately purchased for customer-managed deployments. | The platform includes customer support tickets and supports adding ticket replies through email piping. |
| System requirements | Docker deployment requires Docker Compose and at least 4 GiB of memory; Tomcat deployment uses JDK 11, Tomcat 9.0.x and MySQL, MariaDB or PostgreSQL. | The repository lists PHP 8.3 or higher, Composer, Apache or Nginx, and MariaDB as requirements. |
| What it does | Kill Bill is an open-source platform for subscription billing, usage billing, invoicing and payments. | Paymenter is an open-source billing platform aimed at hosting businesses, for managing subscriptions, services, and customer transactions. |
Plans
Kill Bill
- Kill Bill open sourceFree
- Self-Hosted Open SourceFree
- Aviate$9,999 a month
- AWS MarketplacePrice not published
- Hosted Platform (ChaChing)Priced on request
In their own words
Kill Bill
Kill Bill is an open-source, programmable billing platform with APIs for pricing models, subscriptions, invoices, and payment gateway integrations. It supports usage-based billing, and plugins connect its payment platform to gateways, issuing banks, and fraud tools. The web-based Kaui back-office interface lets teams configure price books and manage subscriptions and payments. Listed integrations include Stripe, Adyen, PayPal, Braintree, GoCardless, Coinbase, Avalara, and Vertex. Installation options include Docker and Tomcat; Kill Bill can run on Windows, Mac, or Linux computers, or on a Linux cloud server. Described security controls include encryption at rest and in transit, TLS communications, AES-256 stored-data encryption, audit logs, role-based access, and multi-tenant isolation. The self-hosted open-source option includes community support, but customers operate and upgrade it; paid support tiers are purchased separately for customer-managed deployments. The AWS Marketplace option is listed at ~$40/mo, plus AWS infrastructure costs. Hosted-platform pricing follows a separate commercial model. The maker describes the product as serving online businesses, customization-focused teams, startups, and growth-stage companies.
Paymenter
Paymenter is an open-source billing platform tailored to hosting companies. It supports automated billing and service deployment, with custom themes and extensions available through its marketplace. A REST API lets users control the platform and automate workflows. 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. The platform includes customer support tickets and can receive ticket replies through email piping. Its WHMCS importer can transfer currencies, users, admins, categories, products, tickets, orders, services, cancellations, invoices and payments. Paymenter is released under the MIT License and is available as a self-hosted product or hosted PaaS. Self-hosted installation lists Ubuntu 24.04 and 22.04, CentOS 9 and 8, and Debian 13, 12 and 11 as supported; Windows is unsupported. The Paymenter plan costs nothing. PaaS costs €5 a month, with free daily backups and Cloudflare DDoS protection described for hosted instances. The installation guide warns that losing the APP_KEY makes encrypted data irrecoverable.