Open Source Primer Alternatives
A curated collection of the 1 best open source alternatives to Primer.
The best open source alternative to Primer is Hyperswitch. If that doesn't suit you, we've compiled a ranked list of other open source Primer alternatives to help you find a suitable replacement.
Primer alternatives are mainly Finance & Accounting but may also be Finance & Fintech. Browse these if you want a narrower list of alternatives or looking for a specific functionality of Primer.
Modular payments infrastructure that routes transactions across more than 120 processors, for teams that want to own their payment stack.
Hyperswitch is a composable, open source payments stack from Juspay. Rather than committing a business to one processor and one integration, it lets teams pick only the modules they need and place them on top of an existing payment setup, without vendor lock-in.
It is written in Rust and connects to Stripe, Adyen, Braintree, Worldpay, Checkout.com, Cybersource and more than 120 other processors. A Control Center provides a visual workflow builder for routing and retry logic, and each module is independent enough to adopt on its own.
The payment modules cover distinct parts of the transaction lifecycle.
- Intelligent routing: sends each transaction to the processor with the highest predicted authorization rate, cutting retries and latency.
- Vault: stores cards, tokens, wallets and bank credentials in a PCI compliant service, or connects an existing vault such as VGS or TokenEx.
- Revenue recovery: fights passive churn with retry strategies tuned by card bin, region and payment method.
- Cost observability: audits payment costs and surfaces hidden fees, downgrades and penalties on self serve dashboards.
- Reconciliation: automates two way and three way matching with backdated support and staggered scheduling.
A setup script brings the stack up locally with Docker or Podman in standard, full or minimal profiles, and Helm charts cover AWS, GCP and Azure. A hosted sandbox lets you configure connectors and test payments before committing any infrastructure of your own.
