Top PAYMENT-GATEWAY GitHub Repositories & Tools (2026)

Open source, composable payments platform | PCI compliant | SaaS and Self-host options | Enables connectivity to multiple payment, payout, fraud, vault and tokenization providers | Uplifts authorization with intelligent routing and revenue recovery | Reduce payment processing costs with cost observability | Reduces payment ops with reconciliation

One library | Many payment processors | Scale to multiple processors with few lines of code.

Accept Bitcoin payments. Free, open-source & self-hosted, Bitcoin payment processor.

Opensource FinTech standards & payment provider data

Adyen API Library for PHP