Open source Finance & Accounting tools
24 free, open source options sorted by GitHub stars.
OpenBBAI-powered analytics workspace built for investment teamsHyperswitchOpen source payment orchestrator for global transactionsERPNextComprehensive business management, tailored for youMiddayStreamline your business finances and operationsLagoTransform complex usage data into accurate, real-time billingAkauntingFree online accounting for small businesses and freelancersGumroadYour all-in-one marketplace for digital creators and productsInvoice NinjaSend invoices, accept payments, manage your business—all freePolarModern payment infrastructure for digital products and SaaSCraterAI-powered embedded AR/AP automation for platformsFlexpriceOpen source metering and billing infrastructure for any pricing modelezBookkeepingLightweight self-hosted bookkeeping with AI receipt scanningExpensifySimplify expense management for businesses of all sizesKimaiEffortless time tracking for teams and projectsBigcapitalAutomate financial processes for smarter business decisionsSpliitEffortlessly split expenses with friends and roommatesAutumnStripe payments, usage tracking, and paywalls in 3 functionsPaymenterModern open-source billing platform for hosting businessesOpenMeterReal-time usage metering and billing for AI companiesFlowgladCross-system automation and knowledge base for accounting firmsMeteroidFlexible billing infrastructure for modern SaaSFormanceOpen source financial infrastructure for modern businessesUniBeeCut billing costs with open-source subscription managementSuprascribeAutomatically discover hidden subscriptions from your inbox