Adyen is a large, publicly traded payments platform that acts as a full-stack gateway, processor, and acquiring bank in one, built for mid-sized to enterprise merchants running global, multi-currency operations. It's a closed, proprietary system — integrating with Adyen means routing transactions through their infrastructure under their commercial terms, with no visibility into or control over the underlying code.
If you want to avoid being tied to a single processor's infrastructure and pricing, Hyperswitch is an open-source alternative that lets you self-host a payments layer and route transactions across 50+ providers instead of committing to one.
FAQ
Is there a free, open-source alternative to Adyen?
Yes. Hyperswitch is open source and self-hostable, letting you connect to many payment providers instead of relying solely on Adyen's proprietary infrastructure.
What's the best open-source alternative to Adyen?
Hyperswitch is the closest match — it plays a similar orchestration role by routing payments across multiple providers, but you control the deployment instead of depending entirely on Adyen.
What are the top open-source alternatives to Adyen?
Browse all open-source alternatives to Adyen above, or explore the full Finance category for more options.