Best Open Source Alternatives to Adyen

Compare the best free and open-source alternatives to Adyen — self-hosted and desktop replacements you fully control, ranked by GitHub stars, license and platform support.

Curated by open-source.store · Updated November 2026 · 2 alternatives

Adyen

Proprietary SaaS

PricingSubscription

Platformsweb, mobile

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Adyen alternatives compared

Open-source alternatives to Adyen, compared by stars, license and platform
Tool		License	Platforms	Self-hosted
Hyperswitch	45,660	Apache-2.0	LinuxmacOSWindowsDocker	Yes	Nov 2026	Visit
Kill Bill	5,835	Apache-2.0	LinuxmacOSWindowsDocker	Yes	Oct 2026	Visit

Top open-source Adyen alternatives

Hyperswitch45,660Apache-2.0

Hyperswitch is an open-source payment orchestration switch that routes transactions across Stripe, Adyen, and other gateways to reduce processing costs.

LinuxmacOSWindowsDockerWeb

vs Adyen: a free, open-source option you fully control, licensed Apache-2.0.

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Kill Bill5,835Apache-2.0

Kill Bill is an open-source billing platform replacing Stripe Billing with self-hosted subscription lifecycles and multi-gateway payment routing.