Adyen vs Kill Bill
Adyen
adyen.comKill Bill
killbill.ioSide by side
| Figure | Adyen | Kill Bill |
|---|---|---|
| Price from | — | $9,999/mo |
| Free plan | — | Yes |
| Free trial | — | Yes |
| Open source | — | Yes |
| Web | Yes | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 2 | 5 |
| Spec score · Payment Processing Software | 8.9 (#7) | 9.2 (#4) |
| Founded | 2006 | 2010 |
| Integrations | Adyen provides a Shopify payments-app integration that requires Shopify Checkout Extensibility. | The maker lists Stripe, Adyen, PayPal, Braintree, GoCardless, Coinbase, Avalara, and Vertex among its integrations. |
| Rating on G2 | 4.0 out of 5 from 44 reviews | 4.5 out of 5 from 2 reviews |
| Rating on Software Advice | 4.6 out of 5 from 31 reviews | 4.7 out of 5 from 17 reviews |
| Security | Adyen’s help page states that it is PCI DSS v4.0 Level 1 compliant and undergoes an annual external audit by a Qualified Security Assessor. | 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. |
| Self-hosting | Adyen documentation describes API endpoints and hosted payment integrations but does not offer a self-hosted Adyen payments server. | 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. |
| What it does | Adyen provides one payment platform for accepting, optimizing and settling online payments through a single integration. | Kill Bill is an open-source platform for subscription billing, usage billing, invoicing and payments. |
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
Adyen
Adyen is an online payments platform for businesses that accept, optimize, and settle payments through one integration. It offers access to more than 200 payment methods and supports 136 currencies. Businesses can use ready-made Drop-in checkout components or create a custom flow with the API. Adyen describes AI tools for checkout personalization, authentication, fraud protection, tokenization, and payment cost optimization. Local acquiring through local licenses is presented as a way to improve authorization rates and lower costs. The platform supports recurring and marketplace payments, with payouts in 36 countries. Listed integrations include Adobe Commerce, Salesforce Commerce Cloud, NetSuite, Shopify, and Microsoft Dynamics 365. It is available through web, Android, iOS, and API. Pricing is transaction-based, with no setup or monthly fees and a fixed processing fee plus a payment-method fee for each transaction. The stated starting price is $0.13. Adyen describes its platform as built for global businesses and enterprise payment volume.
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.