Top Open Source Fintech Infrastructure Tools in 2026
A curated collection of the 5 best free and open-source Fintech Infrastructure tools in 2026. Compare features, GitHub stars, tech stacks, and self-hosted software.
Formance
Build custom financial flows and integrate with any provider using Formance's agnostic platform
Stars519Last commit1mo agoLicenseOpen SourceHyperswitch
A unified payment infrastructure that connects multiple payment processors through a single API integration, enabling global payment processing
Stars43,538Last commit10d agoLicenseApache-2.0Hummingbot
Automate crypto trading strategies with a powerful, customizable platform. Connect to multiple exchanges and optimize your market making.
Stars19,643Last commit1mo agoLicenseApache-2.0Crater
Embedded AR/AP automation for fintech platforms
Stars8,341Last commit43mo agoLicenseAGPL-3.0
Ballerine
AI-powered merchant risk intelligence platform
Stars2,426Last commit10mo agoLicenseOpen Source
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Showing 5 of 5 open-source tools